Munsell matches were made to stimuli composed of a small focal area (subtense,
17′) and a larger surround (subtense, 3°). A fixed set of 36
proportions of two components (red light and incandescent-lamp light) in the
focal area was matched in surround conditions that included five different
proportions of the same two components and three large differences of luminance.
In one surround condition only, the incandescent-lamp light was paired with
green, blue, and purple components. A surround proportion of 98%
red–50% incandescent gave the largest hue range in the matching
samples for a fixed surround luminance. When surround luminance was increased
beyond the maximum focal-area luminance, the hue range of the Munsell matches
increased even farther. Of the pairs of components, the incandescent-blue
combination yielded the largest hue range, but of low saturation, while the
incandescent–green mixture gave the smallest range. Value and chroma
differences among the Munsell matches are discussed.
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Physical characteristics of the stimulus in experiments I, II, and III;
nominal dominant wavelength (λdom), nominal percent
luminous transmittance (%t), and nominal excitation purity
(Pe) are relative to illuminant
“A”.
A. Physical
specifications for each pair of components
The incandescent (tungsten) light was taken as nominally equal to
illuminant “A”. In a dark surround, at maximum
luminance, it was matched by a Munsell sample having a dominant
wavelength of about 577 nm and a purity of about 30%.
Wratten neutral filters (# 96) of various transmittances were
employed to make the transmittance of the neutral filter for the
tungsten light approximately equal to the transmittance of the chromatic
filter.
To obtain the high-luminance surround, total transmittance of the
98R–98T surround (medium luminance) was doubled by removing
neutral filters.
Table II
Average CIE, x, y, and Y coordinates of
matching Munsell samples for each stimulus (Fig. 1), for each surround condition; Experiment I.
Cell No.
Surround conditions
50%R–0%T
98%R–50%T
50%R–98%T
0%R–50%T
50%R–50%T
x
y
Y
x
y
Y
x
y
Y
x
y
Y
x
y
Y
1
0.560
0.326
14.8
0.542
0.318
13.7
0.578
0.317
10.7
0.564
0.323
13.4
0.543
0.326
13.7
2
0.544
0.323
14.1
0.562
0.307
8.1
0.549
0.317
13.7
0.568
0.316
13.4
0.550
0.323
13.7
3
0.556
0.326
14.1
0.518
0.298
7.3
0.576
0.314
12.0
0.560
0.320
13.4
0.557
0.312
12.0
4
0.507
0.301
7.5
0.490
0.303
4.1
0.496
0.300
5.7
0.569
0.314
12.0
0.514
0.290
7.0
5
0.429
0.297
4.6
0.390
0.312
3.1
0.432
0.307
3.1
0.580
0.306
8.5
0.447
0.296
4.0
6
0.321
0.312
1.7
0.323
0.305
1.7
0.294
0.308
1.7
0.306
0.307
1.5
0.300
0.297
1.7
7
0.522
0.351
20.7
0.515
0.332
15.6
0.537
0.325
14.8
0.559
0.339
16.4
0.529
0.336
18.9
8
0.515
0.353
20.7
0.445
0.315
9.6
0.550
0.337
15.6
0.523
0.339
18.9
0.500
0.340
18.9
9
0.512
0.359
18.0
0.439
0.330
7.3
0.542
0.338
12.7
0.520
0.345
19.8
0.506
0.330
16.4
10
0.413
0.368
16.4
0.386
0.333
5.5
0.444
0.334
7.7
0.505
0.347
18.9
0.430
0.323
8.0
11
0.352
0.382
8.0
0.317
0.320
4.1
0.389
0.321
5.2
0.479
0.374
16.4
0.395
0.349
6.1
12
0.302
0.346
5.5
0.291
0.342
3.6
0.309
0.363
3.8
0.338
0.361
8.5
0.298
0.350
3.4
13
0.516
0.376
22.6
0.490
0.358
22.9
0.538
0.344
18.9
0.526
0.358
22.6
0.506
0.354
23.6
14
0.517
0.387
25.4
0.398
0.340
15.6
0.534
0.349
16.4
0.521
0.357
24.6
0.494
0.341
18.0
15
0.490
0.387
22.6
0.370
0.357
12.0
0.495
0.363
16.4
0.508
0.369
22.1
0.449
0.360
22.1
16
0.402
0.388
22.6
0.348
0.362
7.0
0.416
0.348
12.7
0.503
0.370
22.6
0.412
0.371
17.6
17
0.379
0.392
16.4
0.345
0.401
7.0
0.374
0.350
7.7
0.446
0.360
22.6
0.358
0.380
12.0
18
0.304
0.395
9.6
0.321
0.367
4.6
0.328
0.377
5.7
0.344
0.378
16.4
0.318
0.407
8.0
19
0.502
0.383
30.0
0.449
0.392
27.8
0.541
0.368
22.6
0.520
0.378
28.9
0.516
0.376
23.6
20
0.483
0.395
32.4
0.421
0.396
23.8
0.513
0.359
20.7
0.512
0.387
30.0
0.494
0.366
25.6
21
0.449
0.394
27.8
0.386
0.389
17.6
0.473
0.370
22.6
0.502
0.387
27.8
0.485
0.397
25.6
22
0.415
0.390
25.6
0.366
0.402
12.0
0.397
0.365
14.8
0.479
0.399
32.4
0.403
0.392
23.6
23
0.369
0.394
25.6
0.329
0.393
10.4
0.369
0.386
12.7
0.442
0.391
33.7
0.353
0.396
16.4
24
0.332
0.404
18.9
0.292
0.391
7.3
0.339
0.416
9.6
0.368
0.396
24.6
0.320
0.410
12.7
25
0.490
0.400
34.9
0.436
0.380
30.0
0.526
0.378
24.6
0.510
0.380
32.4
0.490
0.370
30.0
26
0.463
0.399
36.2
0.400
0.382
24.6
0.515
0.379
24.6
0.507
0.391
30.0
0.479
0.378
31.2
27
0.446
0.405
33.7
0.390
0.392
22.9
0.478
0.369
24.6
0.491
0.393
30.0
0.474
0.387
31.2
28
0.418
0.418
31.2
0.363
0.407
17.6
0.384
0.384
22.1
0.459
0.395
32.4
0.403
0.393
36.2
29
0.362
0.401
30.0
0.326
0.396
14.3
0.355
0.393
15.6
0.425
0.395
33.7
0.382
0.401
28.9
30
0.327
0.402
25.6
0.316
0.423
12.0
0.326
0.408
13.7
0.368
0.404
32.4
0.321
0.405
18.0
31
0.466
0.397
37.2
0.436
0.388
30.2
0.499
0.373
31.2
0.500
0.382
32.4
0.483
0.386
33.0
32
0.445
0.407
33.7
0.406
0.391
32.0
0.495
0.379
28.9
0.475
0.394
32.4
0.468
0.378
33.0
33
0.435
0.400
37.2
0.383
0.394
27.8
0.463
0.386
30.0
0.481
0.400
37.5
0.453
0.392
31.2
34
0.394
0.406
39.5
0.354
0.396
18.0
0.394
0.403
30.0
0.458
0.407
33.7
0.398
0.384
36.2
35
0.370
0.404
33.0
0.339
0.410
15.7
0.353
0.394
22.6
0.431
0.389
27.8
0.385
0.402
33.7
36
0.342
0.408
25.6
0.306
0.411
15.6
0.320
0.401
16.4
0.390
0.396
30.0
0.338
0.407
28.9
Table III
Average CIE, x, y, and Y coordinates of
matching Munsell samples for each stimulus (Fig. 1), for each condition of surround luminance; two-trial
averages; Experiment II.
Cell No.
Surround conditions
High luminance
2(98%R–98%T)
Medium luminance
98%R–98%T
Low luminance
20%R–20%T
x
y
Y
x
y
Y
x
y
Y
1
0.513
0.295
7.3
0.555
0.308
10.4
0.546
0.339
13.1
2
0.475
0.291
4.9
0.520
0.300
6.9
0.540
0.330
13.1
3
0.493
0.274
4.9
0.510
0.282
10.9
0.562
0.323
12.5
4
0.378
0.274
3.1
0.438
0.275
3.8
0.563
0.309
10.0
5
0.332
0.295
2.2
0.377
0.285
2.7
0.489
0.289
5.8
6
0.293
0.292
1.7
0.306
0.307
1.5
0.315
0.310
1.5
7
0.476
0.292
8.1
0.522
0.315
11.4
0.517
0.352
18.3
8
0.456
0.289
5.8
0.480
0.307
8.1
0.517
0.352
19.1
9
0.428
0.296
5.5
0.470
0.311
7.7
0.515
0.351
21.3
10
0.330
0.301
4.6
0.374
0.310
5.2
0.502
0.353
13.7
11
0.306
0.300
3.6
0.324
0.320
4.3
0.413
0.353
14.3
12
0.279
0.298
2.4
0.278
0.327
2.7
0.274
0.343
6.6
13
0.445
0.313
10.4
0.468
0.338
12.5
0.504
0.361
21.3
14
0.428
0.324
6.6
0.448
0.323
10.4
0.507
0.367
21.3
15
0.378
0.307
6.6
0.425
0.327
8.6
0.482
0.383
22.1
16
0.331
0.327
5.5
0.327
0.316
6.9
0.448
0.367
21.3
17
0.278
0.303
3.8
0.276
0.314
5.5
0.378
0.364
22.1
18
0.280
0.318
3.8
0.260
0.342
4.1
0.286
0.364
13.7
19
0.423
0.334
12.0
0.460
0.353
19.1
0.504
0.380
28.1
20
0.338
0.328
11.4
0.386
0.341
15.6
0.485
0.371
28.1
21
0.316
0.319
9.0
0.332
0.331
13.7
0.465
0.374
30.0
22
0.304
0.323
7.7
0.315
0.352
11.4
0.416
0.385
32.1
23
0.276
0.305
7.3
0.288
0.340
9.0
0.366
0.386
33.0
24
0.277
0.339
5.8
0.264
0.359
6.6
0.310
0.378
22.9
25
0.359
0.337
11.4
0.413
0.354
22.1
0.481
0.375
30.1
26
0.340
0.343
10.9
0.345
0.338
19.1
0.468
0.377
33.0
27
0.310
0.328
12.5
0.320
0.328
16.2
0.456
0.382
34.0
28
0.281
0.311
9.0
0.293
0.333
12.5
0.389
0.373
38.4
29
0.288
0.327
6.9
0.293
0.346
10.4
0.360
0.386
32.1
30
0.287
0.324
5.8
0.267
0.351
8.6
0.317
0.374
31.0
31
0.344
0.339
17.6
0.394
0.363
25.4
0.472
0.383
35.2
32
0.315
0.325
16.9
0.353
0.356
19.8
0.470
0.386
34.0
33
0.309
0.330
16.2
0.320
0.350
18.3
0.438
0.381
38.4
34
0.295
0.333
10.0
0.298
0.340
14.3
0.405
0.392
41.9
35
0.289
0.329
9.0
0.288
0.360
13.7
0.361
0.383
39.5
36
0.282
0.345
8.6
0.274
0.372
12.0
0.334
0.391
40.6
Table IV
Average CIE, x, y, and Y coordinates of
matching Munsell samples for each stimulus (Fig. 1), for each component-pair, for colored surrounds and dark
surrounds separately; Experiment III.
Cell No. and
component-pair
Surround conditions
Colored
Dark
x
y
Y
x
y
Y
Blue–tungsten
1
0.248
0.280
24.6
0.287
0.328
38.4
2
0.246
0.282
18.3
0.283
0.323
43.1
3
0.255
0.273
8.1
0.287
0.328
38.4
4
0.274
0.296
5.2
0.297
0.333
32.1
5
0.298
0.314
3.1
0.291
0.326
16.9
6
0.315
0.302
2.0
0.310
0.316
2.7
7
0.262
0.289
22.9
0.305
0.372
48.0
8
0.272
0.307
16.9
0.301
0.337
48.0
9
0.268
0.285
15.6
0.293
0.324
48.0
10
0.294
0.310
8.1
0.325
0.350
38.4
11
0.291
0.302
6.6
0.355
0.370
26.4
12
0.334
0.312
2.7
0.393
0.381
18.3
13
0.270
0.299
26.4
0.308
0.338
45.6
14
0.282
0.304
19.8
0.318
0.351
45.6
15
0.285
0.292
15.6
0.325
0.374
45.6
16
0.312
0.333
10.9
0.351
0.374
40.6
17
0.328
0.342
10.0
0.360
0.373
34.0
18
0.367
0.335
5.8
0.385
0.386
26.4
19
0.276
0.299
28.1
0.334
0.367
53.4
20
0.282
0.300
21.3
0.345
0.378
50.7
21
0.309
0.319
19.8
0.339
0.360
40.6
22
0.351
0.363
16.9
0.359
0.376
43.1
23
0.377
0.368
13.1
0.373
0.386
34.0
24
0.380
0.368
8.1
0.392
0.386
34.0
25
0.284
0.314
38.4
0.337
0.359
48.0
26
0.296
0.315
30.0
0.337
0.360
50.7
27
0.328
0.350
28.1
0.356
0.384
50.7
28
0.352
0.364
21.3
0.366
0.386
40.6
29
0.368
0.376
18.3
0.380
0.387
36.2
30
0.401
0.381
14.3
0.395
0.391
38.4
31
0.296
0.306
56.1
0.352
0.375
56.1
32
0.321
0.340
30.0
0.346
0.364
48.0
33
0.338
0.354
28.1
0.354
0.368
53.4
34
0.372
0.385
19.8
0.381
0.394
50.7
35
0.387
0.378
19.8
0.379
0.383
43.1
36
0.386
0.374
15.6
0.396
0.399
40.6
Green–tungsten
1
0.241
0.381
19.8
0.254
0.433
19.8
2
0.245
0.388
15.6
0.256
0.435
18.3
3
0.251
0.381
15.6
0.255
0.400
21.3
4
0.241
0.349
5.8
0.245
0.412
16.9
5
0.279
0.327
3.1
0.237
0.406
10.9
6
0.305
0.296
1.4
0.310
0.316
2.0
7
0.264
0.394
21.3
0.272
0.414
26.4
8
0.265
0.390
31.3
0.274
0.439
22.9
9
0.265
0.375
13.1
0.270
0.427
28.1
10
0.294
0.340
6.6
0.301
0.408
24.6
11
0.338
0.334
3.6
0.315
0.382
18.3
12
0.381
0.320
2.7
0.378
0.360
18.3
13
0.257
0.374
22.9
0.274
0.428
28.1
14
0.262
0.378
21.3
0.284
0.428
30.0
15
0.282
0.390
18.3
0.294
0.444
30.0
16
0.318
0.372
8.1
0.310
0.398
34.0
17
0.358
0.342
6.6
0.331
0.385
28.1
18
0.409
0.321
3.6
0.395
0.375
26.4
19
0.271
0.365
30.0
0.296
0.437
32.1
20
0.388
0.379
22.9
0.306
0.426
36.2
21
0.309
0.374
19.8
0.321
0.427
43.1
22
0.362
0.382
13.1
0.337
0.394
48.0
23
0.363
0.341
14.3
0.366
0.397
38.4
24
0.416
0.335
10.9
0.382
0.369
34.0
25
0.288
0.386
36.2
0.302
0.442
32.1
26
0.325
0.400
26.4
0.319
0.444
43.1
27
0.334
0.383
26.4
0.324
0.420
40.6
28
0.369
0.368
14.3
0.343
0.406
45.6
29
0.393
0.350
18.3
0.375
0.402
38.4
30
0.426
0.348
14.3
0.399
0.384
32.1
31
0.311
0.412
38.4
0.310
0.450
36.2
32
0.332
0.420
34.0
0.325
0.452
43.1
33
0.352
0.373
30.0
0.335
0.427
40.6
34
0.381
0.378
24.6
0.360
0.391
43.1
35
0.400
0.363
24.6
0.373
0.398
43.1
36
0.415
0.343
15.6
0.396
0.386
40.6
Red–tungsten
1
0.528
0.309
15.6
0.557
0.308
14.3
2
0.529
0.319
13.1
0.549
0.313
13.1
3
0.523
0.312
9.0
0.541
0.306
13.1
4
0.466
0.300
5.8
0.545
0.306
13.1
5
0.363
0.292
2.7
0.528
0.298
8.1
6
0.307
0.322
1.5
0.310
0.316
1.7
7
0.522
0.335
19.8
0.527
0.323
16.9
8
0.502
0.323
13.1
0.513
0.330
14.3
9
0.490
0.311
8.1
0.528
0.332
13.1
10
0.466
0.322
6.6
0.490
0.310
16.9
11
0.355
0.330
5.8
0.443
0.337
16.9
12
0.300
0.318
3.6
0.367
0.366
15.6
13
0.520
0.344
16.9
0.486
0.335
19.8
14
0.506
0.327
14.3
0.519
0.334
16.9
15
0.439
0.329
10.9
0.511
0.338
19.8
16
0.310
0.318
6.6
0.502
0.378
22.9
17
0.305
0.317
6.6
0.440
0.362
22.9
18
0.293
0.344
4.1
0.368
0.363
15.6
19
0.511
0.372
19.8
0.493
0.351
22.9
20
0.471
0.365
18.3
0.509
0.357
28.1
21
0.402
0.359
14.3
0.496
0.357
28.1
22
0.302
0.339
14.3
0.458
0.368
30.0
23
0.302
0.346
10.0
0.430
0.372
28.1
24
0.286
0.362
5.8
0.356
0.365
34.0
25
0.497
0.363
19.8
0.517
0.389
26.4
26
0.421
0.354
21.3
0.504
0.390
30.0
27
0.350
0.344
19.8
0.486
0.386
26.4
28
0.301
0.343
18.3
0.450
0.374
32.1
29
0.299
0.366
12.0
0.409
0.372
36.2
30
0.288
0.382
9.0
0.350
0.361
28.1
31
0.506
0.379
30.0
0.513
0.397
30.0
32
0.404
0.349
17.0
0.486
0.369
30.0
33
0.352
0.352
19.8
0.481
0.379
30.0
34
0.339
0.352
15.6
0.453
0.382
36.2
35
0.305
0.373
17.0
0.410
0.380
34.0
36
0.283
0.379
12.0
0.365
0.381
32.1
Purple–tungsten
1
0.415
0.284
12.0
0.474
0.262
12.0
2
0.456
0.275
10.9
0.465
0.256
10.0
3
0.440
0.259
8.1
0.502
0.266
10.9
4
0.417
0.272
4.1
0.500
0.277
9.0
5
0.354
0.282
4.1
0.490
0.277
8.1
6
0.328
0.315
1.7
0.310
0.316
3.6
7
0.437
0.282
12.0
0.497
0.266
10.9
8
0.439
0.284
10.9
0.466
0.269
12.0
9
0.445
0.271
9.0
0.532
0.288
12.0
10
0.382
0.272
5.8
0.472
0.296
14.3
11
0.357
0.321
4.6
0.447
0.308
14.3
12
0.317
0.322
2.4
0.344
0.344
13.1
13
0.450
0.271
14.3
0.474
0.285
14.3
14
0.438
0.285
10.0
0.465
0.282
14.3
15
0.430
0.278
10.9
0.454
0.292
14.3
16
0.358
0.304
8.1
0.467
0.307
16.9
17
0.330
0.323
4.6
0.430
0.334
16.9
18
0.291
0.332
3.6
0.346
0.359
16.9
19
0.442
0.286
15.6
0.470
0.293
15.6
20
0.426
0.297
15.6
0.480
0.294
16.9
21
0.370
0.317
10.9
0.492
0.326
19.8
22
0.334
0.332
9.0
0.461
0.356
24.6
23
0.299
0.332
10.0
0.410
0.345
26.4
24
0.300
0.346
5.8
0.376
0.368
28.1
25
0.459
0.296
15.6
0.481
0.304
19.8
26
0.405
0.319
18.3
0.489
0.312
18.3
27
0.342
0.345
15.6
0.472
0.321
21.3
28
0.346
0.356
12.0
0.439
0.337
24.6
29
0.305
0.368
10.9
0.404
0.346
28.1
30
0.292
0.355
7.3
0.358
0.368
32.1
31
0.461
0.309
18.3
0.498
0.339
18.3
32
0.354
0.314
18.3
0.490
0.335
21.3
33
0.344
0.330
15.6
0.483
0.343
24.6
34
0.332
0.357
13.1
0.450
0.357
24.6
35
0.295
0.368
14.3
0.401
0.349
30.0
36
0.288
0.368
9.0
0.376
0.383
32.1
Table V
Individual differences in Munsell hue, value, and chroma of matching
responses to selected cells; subjects 1, 2, and 3 viewed the chromatic
surround first; subjects 4, 5, and 6 viewed the dark surround first;
Experiment III.
Subject No.
Surround condition:
98%B-98%T
Cell number
1
8
15
22
29
36
1
7.5BG 6/4
7.55G 6/6
2.5PB 6/2
7.5Y 6/4
7.5Y 6/6
10YR 5/8
2
2.5PB 6/8
5B 4/2
10B 4/2
7.5Y 4/4
2.5Y 4/4
5Y 5/8
3
5B 3/2
10BG 3/2
5PB 3/2
5Y 3/2
10YR 5/2
7.5YR 3/2
4
5B 6/4
7.5BG 5/2
2.5PB 5/2
5Y 5/2
7.5Y 5/4
10 YR 5/2
5
7.5B 7/10
5B 5/1
N 4/0
N 5/0
5Y 4/1
2.5Y 4/1
6
10B 5/2
10B 5/2
5PB 5/2
5P 5/2
7.5P 5/2
7.5P 5/2
6
11
16
21
26
31
1
2.5YR 2/2
5BG 3/2
10G 5/2
7.5GY 6/2
2.5GY 8/4
5PB 8/2
2
N 2/0
N 3/0
5BG 4/2
N 5/0
2.5B 6/2
7.5PB 8/4
3
N 1/0
N 2/0
5Y 1/1
N 3/0
5PB 4/2
5PB 7/4
4
10PB 2/2
10B 3/2
2.5GY 4/2
N 5/0
7.5B 6/2
5G 8/2
5
N 1/0
N 4/0
N 4/0
N 5/0
10BG 5/2
N 8/0
6
2.5P 1/1
2.5PB 3/2
7.5PB 5/2
7.5PB 6/2
7.5PB 7/2
N 8/0
Subject No.
Surround condition:
0%B-0%T
Cell number
1
8
15
22
29
36
1
2.5B 7/4
2.5B 8/2
7.5GY 8/2
2.5Y 8/4
10YR 8/6
2.5Y 7/6
2
7.5BG 8/4
10BG 8/2
5GY 8/6
5Y 7/6
5Y 8/8
2.5Y 6/6
3
5BG 6/2
10G 7/2
10GY 6/2
7.5Y 6/2
5Y 6/2
10YR 8/4
4
2.5G 6/2
2.5G 6/2
5GY 6/2
7.5Y 6/2
2.5Y 6/4
2.5Y 5/4
5
10G 6/2
10GY 8/3
2.5GY 8/4
5Y 7/2
2.5Y 8/5
2.5Y 8/6
6
2.5G 7/3
10GY 7/3
5GY 7/3
2.5GY 8/4
5Y 6/2
2.5Y 7/5
6
11
16
21
26
31
1
N 3/0
7.5Y 6/4
10Y 8/4
7.5Y 8/2
7.5Y 8/2
2.5Y 8/2
2
N 1/0
5Y 5/4
7.5Y 8/6
7.5Y 8/2
5GY 8/4
10Y 8/6
3
N 1/0
N 5/0
2.5GY 7/2
10Y 6/2
2.5GY 8/2
N 8/0
4
N 3/0
10Y 5/2
7.5Y 6/2
5GY 6/2
2.5GY 6/2
10Y 7/4
5
N 2/0
10YR 8/4
7.5Y 7/2
10Y 7/3
7.5Y 8/2
5Y 8/4
6
N 1/0
10Y 5/2
10Y 5/2
10Y 6/2
2.5GY 7/2
2.5GY 8/4
Subject No.
Surround condition:
98%G-98%T
Cell number
1
8
15
22
29
36
1
7.5BG 5/6
7.5G 6/6
7.5G 6/6
7.5Y 6/4
7.5YR 7/6
5YR 4/4
2
7.5G 4/6
7.5G 5/6
2.5G 4/4
2.5GY 4/4
10YR 5/6
5YR 4/6
3
10G 5/8
7.5G 4/6
2.5G 4/4
5Y 4/2
2.5YR 3/2
5R 4/6
4
2.5G 5/12
2.5G 5/10
10GY 5/8
10Y 4/4
5YR 5/3
2.5YR 5/4
5
2.55G 6/3
10G 6/4
10G 5/4
5Y 3/2
10R 5/6
10R 6/8
6
5G 5/8
2.5G 5/6
5G 5/6
2.5RP 4/2
10P 4/4
2.5RP 4/4
6
11
16
21
26
31
1
5PB 2/2
10GY 3/2
10GY 4/6
10GY 6/4
7.5GY 7/8
5BG 7/4
2
N 1/0
10YR 2/2
7.5GY 3/4
7.5GY 4/6
10GY 5/4
7.5GY 7/6
3
N 1/0
N 2/0
5GY 2/2
N 4/0
7.55G 4/1
2.5G 6/4
4
N 1/0
5GY 2/2
2.5GY 3/2
10GY 5/8
10GY 5/4
10GY 6/8
5
N 1/0
5YR 1/1
N 4/0
N 5/0
2.5GY 8/5
7.5GY 8/8
6
2.5RP 1/2
10P 3/4
10PB 4/2
2.5B 5/2
7.5GY 5/6
10GY 6/8
Subject No.
Surround condition:
0%G-0%T
Cell number
1
8
15
22
29
36
1
5G 5/8
2.5G 6/8
2.5G 6/8
2.5G 8/4
7.5Y 7/4
10YR 7/6
2
2.5G 5/8
10GY 5/8
10GY 6/10
5GY 7/6
10Y 7/6
5Y 7/8
3
5G 5/10
2.5G 5/8
2.5G 6/8
10GY 7/6
2.5GY 5/4
5YR 6/4
4
2.5G 4/8
2.5G 5/8
10GY 5/6
7.5GY 7/6
10Y 6/4
2.5Y 6/4
5
5G 5/10
5G 5/10
2.5G 6/10
7.5GY 8/5
7.5YR 8/6
10YR 8/6
6
2.5G 6/8
2.5G 6/8
10GY 7/8
7.5GY 7/4
10Y 7/4
2.5YR 7/4
6
11
16
21
26
31
1
N 1/0
2.5G 6/6
2.5G 7/6
2.5G 6/6
2.5G 7/6
2.5G 7/8
2
N 1/0
7.5GY 5/4
7.5GY 7/6
7.5GY 8/8
7.5GY 7/10
7.5GY 6/8
3
N 1/0
10GY 4/2
10GY 4/4
10GY 7/8
10GY 6/8
10GY 6/10
4
N 3/0
7.5GY 4/4
10GY 5/4
7.5GY 6/6
7.5GY 7/8
7.5GY 7/8
5
N 2/0
7.5GY 5/3
2.5G 8/6
7.5GY 8/6
2.5G 7/9
2.5G 6/10
6
N 1/0
10GY 5/2
10GY 7/6
10GY 7/8
7.5GY 8/8
10GY 7/6
Subject No.
Surround condition:
98%R-98%T
Cell number
1
8
15
22
29
36
1
7.5R 4/12
7.5R 4/10
7.5R 4/6
7.5GY 4/2
10GY 5/2
5G 4/4
2
5R 4/10
10R 4/10
2.5YR 5/10
10BG 4/2
5G 3/2
2.5G 4/4
3
5R 4/14
5R 4/12
7.5R 3/8
N 4/0
5G 3/2
7.5G 3/2
4
5R 5/14
7.5R 4/10
10R 4/6
5GY 4/4
7.5GY 4/4
10GY 4/6
5
7.5R 6/12
7.5R 5/8
N 3/0
10BG 6/2
10G 5/4
2.5BG 5/6
6
7.5RP 4/14
7.5RP 4/10
5RP 4/8
10BG 4/2
10GY 4/4
2.5G 4/4
6
11
16
21
26
31
1
N 1/0
2.5YR 3/4
10G7 2/2
5YR 5/10
7.5R 5/6
2.5YR 6/14
2
N 1/0
2.5 YR 3/4
5YR 4/4
2.5Y 3/2
5YR 5/6
2.5YR 6/14
3
N 1/0
N 7.5/0
N 2/0
10R 3/6
10R 5/6
2.5YR 6/4
4
5G 2/2
5GY 2/2
7.5PB 4/2
7.5Y 4/2
7.5GY 5/2
2.5YR 5/8
5
N 1/0
N 2/0
10BG 3/1
10BG 6/4
7.5R 6/8
10R 7/8
6
N 1/0
7.5P 2/2
7.5P 3/2
10R 5/6
10R 5/8
10R 6/10
Subject No.
Surround condition;
0%R-0%T
Cell number
1
8
15
22
29
36
1
5R 4/14
5R 5/12
7.5R 5/12
10R 6/10
10R 7/6
5Y 6/4
2
7.5R 4/12
10R 4/10
10R 5/8
2.5YR 7/10
7.5YR 7/6
5Y 7/4
3
5R 4/14
7.5R 4/12
7.5R 5/12
5YR 5/10
10YR 7/8
10Y 6/4
4
5R 5/14
7.5R 4/12
7.5R 5/12
10R 5/6
2.5YR 5/4
2.5Y 5/2
5
5R 5/14
7.5R 4/8
7.5R 5/9
10R 7/8
5YR 7/7
2.5Y 6/2
6
2.5R 4/12
2.5R 5/8
5R 5/10
2.5YR 6/6
7.5YR 6/4
7.5Y 7/4
6
11
16
21
26
31
1
N 1/0
7.5R 5/8
10R 4/10
7.5R 5/12
7.5R 6/10
7.5R 6/10
2
N 1/0
2.5YR 5/6
2.5YR 5/10
2.5YR 6/12
2.5YR 6/14
5YR 6/12
3
N 1/0
7.5R 4/8
2.5YR 5/10
2.5YR 6/14
2.5YR 6/14
2.5YR 6/14
4
N 2/0
7.5R 4/4
10R 5/10
10R 6/10
10R 6/12
10R 6/12
5
N 2/0
10R 5/8
10R 7/8
7.5R 6/6
7.5R 6/8
10R 6/12
6
N 1/0
10RP 5/8
7.5R 6/10
5R 6/10
7.5R 6/10
7.5R 6/10
Subject No.
Surround condition:
98%P-98%T
Cell number
1
8
15
22
29
36
1
5R 4/4
5R 4/4
2.5R 5/8
10RP 4/6
5G 5/2
2.5G 4/4
2
10RP 3/8
10RP 4/10
10RP 4/6
5GY 4/4
10GY 3/6
5G 4/4
3
10RP 4/10
10RP 3/10
7.5RP 3/6
N 3/0
10GY 3/2
7.5G 3/4
4
10RP 5/4
2.5R 4/10
2.5R 4/10
7.5GY 3/2
2.5G 4/4
2.5G 4/4
5
10RP 4/6
2.5R 4/6
10RP 4/10
10B 4/1
10B 4/2
7.5GY 3/2
6
5RP 4/14
5RP 4/12
5RP 3/10
2.5RP 3/2
5Y 4/2
5G 3/2
6
11
16
21
26
31
1
7.5RP 2/2
10R 3/4
10RP 4/8
2.5R 5/8
10RP 5/10
2.5R 5/10
2
N 1/0
5R 2/4
10R 3/6
2.5YR 3/6
7.5R 6/10
5R 5/10
3
N 1/0
N 2/0
N 3/0
5R 3/2
5R 3/2
2.5R 5/12
4
2.5YR 2/2
5Y 3/2
5GY 3/2
107 4/2
5R 5/8
10RP 5/8
5
N 1/0
N 2/0
7.5PB 4/2
7.5PB 4/3
10PB 6/3
2.5R 5/8
6
N 1/0
7.5P 3/2
7.5P 3/6
7.5P 4/4
7.5RP 4/8
10RP 4/10
Subject No.
Surround condition;
0%P-0%T
Cell number
1
8
15
22
29
36
1
10RP 4/14
7.5RP 4/12
5RP 4/12
7.5R 6/10
2.5R 6/8
7.5R 6/2
2
2.5R 3/10
2.5R 4/10
5R 5/10
7.5R 6/8
5YR 7/8
2.5Y 8/6
3
7.5RP 4/12
10RP 4/12
7.5R 4/4
7.5R 5/6
10R 4/4
7.5Y 5/6
4
10RP 5/14
2.5R 4/12
2.5R 4/10
5R 5/10
5YR 5/4
2.5Y 5/4
5
10RP 4/12
10RP 4/12
2.5R 5/12
7.5R 6/12
7.5R 7/6
2.5Y 8/3
6
5RP 4/12
5RP 4/12
7.5RP 4/12
7.5R 5/6
2.5YR 6/4
7.5Y 5/2
6
11
16
21
26
31
1
N 1/0
10RP 5/10
2.5R 5/10
5R 5/10
5R 5/12
5R 5/10
2
N 1/0
5R 4/8
7.5R 5/6
2.5R 5/10
7.5R 5/6
7.5R 6/10
3
N 1/0
2.5R 4/6
5R 4/12
5R 4/12
5R 4/14
5R 5/12
4
N 2/0
5R 4/8
2.5R 4/8
5R 5/10
5R 5/12
5R 5/10
5
N 5/0
2.5R 5/10
2.5R 5/12
5R 6/12
2.5R 5/13
2.5R 3/11
6
N 1/0
2.5R 4/6
10RP 5/10
10RP 5/10
10RP 5/10
10RP 5/10
Tables (5)
Table I
Physical characteristics of the stimulus in experiments I, II, and III;
nominal dominant wavelength (λdom), nominal percent
luminous transmittance (%t), and nominal excitation purity
(Pe) are relative to illuminant
“A”.
A. Physical
specifications for each pair of components
The incandescent (tungsten) light was taken as nominally equal to
illuminant “A”. In a dark surround, at maximum
luminance, it was matched by a Munsell sample having a dominant
wavelength of about 577 nm and a purity of about 30%.
Wratten neutral filters (# 96) of various transmittances were
employed to make the transmittance of the neutral filter for the
tungsten light approximately equal to the transmittance of the chromatic
filter.
To obtain the high-luminance surround, total transmittance of the
98R–98T surround (medium luminance) was doubled by removing
neutral filters.
Table II
Average CIE, x, y, and Y coordinates of
matching Munsell samples for each stimulus (Fig. 1), for each surround condition; Experiment I.
Cell No.
Surround conditions
50%R–0%T
98%R–50%T
50%R–98%T
0%R–50%T
50%R–50%T
x
y
Y
x
y
Y
x
y
Y
x
y
Y
x
y
Y
1
0.560
0.326
14.8
0.542
0.318
13.7
0.578
0.317
10.7
0.564
0.323
13.4
0.543
0.326
13.7
2
0.544
0.323
14.1
0.562
0.307
8.1
0.549
0.317
13.7
0.568
0.316
13.4
0.550
0.323
13.7
3
0.556
0.326
14.1
0.518
0.298
7.3
0.576
0.314
12.0
0.560
0.320
13.4
0.557
0.312
12.0
4
0.507
0.301
7.5
0.490
0.303
4.1
0.496
0.300
5.7
0.569
0.314
12.0
0.514
0.290
7.0
5
0.429
0.297
4.6
0.390
0.312
3.1
0.432
0.307
3.1
0.580
0.306
8.5
0.447
0.296
4.0
6
0.321
0.312
1.7
0.323
0.305
1.7
0.294
0.308
1.7
0.306
0.307
1.5
0.300
0.297
1.7
7
0.522
0.351
20.7
0.515
0.332
15.6
0.537
0.325
14.8
0.559
0.339
16.4
0.529
0.336
18.9
8
0.515
0.353
20.7
0.445
0.315
9.6
0.550
0.337
15.6
0.523
0.339
18.9
0.500
0.340
18.9
9
0.512
0.359
18.0
0.439
0.330
7.3
0.542
0.338
12.7
0.520
0.345
19.8
0.506
0.330
16.4
10
0.413
0.368
16.4
0.386
0.333
5.5
0.444
0.334
7.7
0.505
0.347
18.9
0.430
0.323
8.0
11
0.352
0.382
8.0
0.317
0.320
4.1
0.389
0.321
5.2
0.479
0.374
16.4
0.395
0.349
6.1
12
0.302
0.346
5.5
0.291
0.342
3.6
0.309
0.363
3.8
0.338
0.361
8.5
0.298
0.350
3.4
13
0.516
0.376
22.6
0.490
0.358
22.9
0.538
0.344
18.9
0.526
0.358
22.6
0.506
0.354
23.6
14
0.517
0.387
25.4
0.398
0.340
15.6
0.534
0.349
16.4
0.521
0.357
24.6
0.494
0.341
18.0
15
0.490
0.387
22.6
0.370
0.357
12.0
0.495
0.363
16.4
0.508
0.369
22.1
0.449
0.360
22.1
16
0.402
0.388
22.6
0.348
0.362
7.0
0.416
0.348
12.7
0.503
0.370
22.6
0.412
0.371
17.6
17
0.379
0.392
16.4
0.345
0.401
7.0
0.374
0.350
7.7
0.446
0.360
22.6
0.358
0.380
12.0
18
0.304
0.395
9.6
0.321
0.367
4.6
0.328
0.377
5.7
0.344
0.378
16.4
0.318
0.407
8.0
19
0.502
0.383
30.0
0.449
0.392
27.8
0.541
0.368
22.6
0.520
0.378
28.9
0.516
0.376
23.6
20
0.483
0.395
32.4
0.421
0.396
23.8
0.513
0.359
20.7
0.512
0.387
30.0
0.494
0.366
25.6
21
0.449
0.394
27.8
0.386
0.389
17.6
0.473
0.370
22.6
0.502
0.387
27.8
0.485
0.397
25.6
22
0.415
0.390
25.6
0.366
0.402
12.0
0.397
0.365
14.8
0.479
0.399
32.4
0.403
0.392
23.6
23
0.369
0.394
25.6
0.329
0.393
10.4
0.369
0.386
12.7
0.442
0.391
33.7
0.353
0.396
16.4
24
0.332
0.404
18.9
0.292
0.391
7.3
0.339
0.416
9.6
0.368
0.396
24.6
0.320
0.410
12.7
25
0.490
0.400
34.9
0.436
0.380
30.0
0.526
0.378
24.6
0.510
0.380
32.4
0.490
0.370
30.0
26
0.463
0.399
36.2
0.400
0.382
24.6
0.515
0.379
24.6
0.507
0.391
30.0
0.479
0.378
31.2
27
0.446
0.405
33.7
0.390
0.392
22.9
0.478
0.369
24.6
0.491
0.393
30.0
0.474
0.387
31.2
28
0.418
0.418
31.2
0.363
0.407
17.6
0.384
0.384
22.1
0.459
0.395
32.4
0.403
0.393
36.2
29
0.362
0.401
30.0
0.326
0.396
14.3
0.355
0.393
15.6
0.425
0.395
33.7
0.382
0.401
28.9
30
0.327
0.402
25.6
0.316
0.423
12.0
0.326
0.408
13.7
0.368
0.404
32.4
0.321
0.405
18.0
31
0.466
0.397
37.2
0.436
0.388
30.2
0.499
0.373
31.2
0.500
0.382
32.4
0.483
0.386
33.0
32
0.445
0.407
33.7
0.406
0.391
32.0
0.495
0.379
28.9
0.475
0.394
32.4
0.468
0.378
33.0
33
0.435
0.400
37.2
0.383
0.394
27.8
0.463
0.386
30.0
0.481
0.400
37.5
0.453
0.392
31.2
34
0.394
0.406
39.5
0.354
0.396
18.0
0.394
0.403
30.0
0.458
0.407
33.7
0.398
0.384
36.2
35
0.370
0.404
33.0
0.339
0.410
15.7
0.353
0.394
22.6
0.431
0.389
27.8
0.385
0.402
33.7
36
0.342
0.408
25.6
0.306
0.411
15.6
0.320
0.401
16.4
0.390
0.396
30.0
0.338
0.407
28.9
Table III
Average CIE, x, y, and Y coordinates of
matching Munsell samples for each stimulus (Fig. 1), for each condition of surround luminance; two-trial
averages; Experiment II.
Cell No.
Surround conditions
High luminance
2(98%R–98%T)
Medium luminance
98%R–98%T
Low luminance
20%R–20%T
x
y
Y
x
y
Y
x
y
Y
1
0.513
0.295
7.3
0.555
0.308
10.4
0.546
0.339
13.1
2
0.475
0.291
4.9
0.520
0.300
6.9
0.540
0.330
13.1
3
0.493
0.274
4.9
0.510
0.282
10.9
0.562
0.323
12.5
4
0.378
0.274
3.1
0.438
0.275
3.8
0.563
0.309
10.0
5
0.332
0.295
2.2
0.377
0.285
2.7
0.489
0.289
5.8
6
0.293
0.292
1.7
0.306
0.307
1.5
0.315
0.310
1.5
7
0.476
0.292
8.1
0.522
0.315
11.4
0.517
0.352
18.3
8
0.456
0.289
5.8
0.480
0.307
8.1
0.517
0.352
19.1
9
0.428
0.296
5.5
0.470
0.311
7.7
0.515
0.351
21.3
10
0.330
0.301
4.6
0.374
0.310
5.2
0.502
0.353
13.7
11
0.306
0.300
3.6
0.324
0.320
4.3
0.413
0.353
14.3
12
0.279
0.298
2.4
0.278
0.327
2.7
0.274
0.343
6.6
13
0.445
0.313
10.4
0.468
0.338
12.5
0.504
0.361
21.3
14
0.428
0.324
6.6
0.448
0.323
10.4
0.507
0.367
21.3
15
0.378
0.307
6.6
0.425
0.327
8.6
0.482
0.383
22.1
16
0.331
0.327
5.5
0.327
0.316
6.9
0.448
0.367
21.3
17
0.278
0.303
3.8
0.276
0.314
5.5
0.378
0.364
22.1
18
0.280
0.318
3.8
0.260
0.342
4.1
0.286
0.364
13.7
19
0.423
0.334
12.0
0.460
0.353
19.1
0.504
0.380
28.1
20
0.338
0.328
11.4
0.386
0.341
15.6
0.485
0.371
28.1
21
0.316
0.319
9.0
0.332
0.331
13.7
0.465
0.374
30.0
22
0.304
0.323
7.7
0.315
0.352
11.4
0.416
0.385
32.1
23
0.276
0.305
7.3
0.288
0.340
9.0
0.366
0.386
33.0
24
0.277
0.339
5.8
0.264
0.359
6.6
0.310
0.378
22.9
25
0.359
0.337
11.4
0.413
0.354
22.1
0.481
0.375
30.1
26
0.340
0.343
10.9
0.345
0.338
19.1
0.468
0.377
33.0
27
0.310
0.328
12.5
0.320
0.328
16.2
0.456
0.382
34.0
28
0.281
0.311
9.0
0.293
0.333
12.5
0.389
0.373
38.4
29
0.288
0.327
6.9
0.293
0.346
10.4
0.360
0.386
32.1
30
0.287
0.324
5.8
0.267
0.351
8.6
0.317
0.374
31.0
31
0.344
0.339
17.6
0.394
0.363
25.4
0.472
0.383
35.2
32
0.315
0.325
16.9
0.353
0.356
19.8
0.470
0.386
34.0
33
0.309
0.330
16.2
0.320
0.350
18.3
0.438
0.381
38.4
34
0.295
0.333
10.0
0.298
0.340
14.3
0.405
0.392
41.9
35
0.289
0.329
9.0
0.288
0.360
13.7
0.361
0.383
39.5
36
0.282
0.345
8.6
0.274
0.372
12.0
0.334
0.391
40.6
Table IV
Average CIE, x, y, and Y coordinates of
matching Munsell samples for each stimulus (Fig. 1), for each component-pair, for colored surrounds and dark
surrounds separately; Experiment III.
Cell No. and
component-pair
Surround conditions
Colored
Dark
x
y
Y
x
y
Y
Blue–tungsten
1
0.248
0.280
24.6
0.287
0.328
38.4
2
0.246
0.282
18.3
0.283
0.323
43.1
3
0.255
0.273
8.1
0.287
0.328
38.4
4
0.274
0.296
5.2
0.297
0.333
32.1
5
0.298
0.314
3.1
0.291
0.326
16.9
6
0.315
0.302
2.0
0.310
0.316
2.7
7
0.262
0.289
22.9
0.305
0.372
48.0
8
0.272
0.307
16.9
0.301
0.337
48.0
9
0.268
0.285
15.6
0.293
0.324
48.0
10
0.294
0.310
8.1
0.325
0.350
38.4
11
0.291
0.302
6.6
0.355
0.370
26.4
12
0.334
0.312
2.7
0.393
0.381
18.3
13
0.270
0.299
26.4
0.308
0.338
45.6
14
0.282
0.304
19.8
0.318
0.351
45.6
15
0.285
0.292
15.6
0.325
0.374
45.6
16
0.312
0.333
10.9
0.351
0.374
40.6
17
0.328
0.342
10.0
0.360
0.373
34.0
18
0.367
0.335
5.8
0.385
0.386
26.4
19
0.276
0.299
28.1
0.334
0.367
53.4
20
0.282
0.300
21.3
0.345
0.378
50.7
21
0.309
0.319
19.8
0.339
0.360
40.6
22
0.351
0.363
16.9
0.359
0.376
43.1
23
0.377
0.368
13.1
0.373
0.386
34.0
24
0.380
0.368
8.1
0.392
0.386
34.0
25
0.284
0.314
38.4
0.337
0.359
48.0
26
0.296
0.315
30.0
0.337
0.360
50.7
27
0.328
0.350
28.1
0.356
0.384
50.7
28
0.352
0.364
21.3
0.366
0.386
40.6
29
0.368
0.376
18.3
0.380
0.387
36.2
30
0.401
0.381
14.3
0.395
0.391
38.4
31
0.296
0.306
56.1
0.352
0.375
56.1
32
0.321
0.340
30.0
0.346
0.364
48.0
33
0.338
0.354
28.1
0.354
0.368
53.4
34
0.372
0.385
19.8
0.381
0.394
50.7
35
0.387
0.378
19.8
0.379
0.383
43.1
36
0.386
0.374
15.6
0.396
0.399
40.6
Green–tungsten
1
0.241
0.381
19.8
0.254
0.433
19.8
2
0.245
0.388
15.6
0.256
0.435
18.3
3
0.251
0.381
15.6
0.255
0.400
21.3
4
0.241
0.349
5.8
0.245
0.412
16.9
5
0.279
0.327
3.1
0.237
0.406
10.9
6
0.305
0.296
1.4
0.310
0.316
2.0
7
0.264
0.394
21.3
0.272
0.414
26.4
8
0.265
0.390
31.3
0.274
0.439
22.9
9
0.265
0.375
13.1
0.270
0.427
28.1
10
0.294
0.340
6.6
0.301
0.408
24.6
11
0.338
0.334
3.6
0.315
0.382
18.3
12
0.381
0.320
2.7
0.378
0.360
18.3
13
0.257
0.374
22.9
0.274
0.428
28.1
14
0.262
0.378
21.3
0.284
0.428
30.0
15
0.282
0.390
18.3
0.294
0.444
30.0
16
0.318
0.372
8.1
0.310
0.398
34.0
17
0.358
0.342
6.6
0.331
0.385
28.1
18
0.409
0.321
3.6
0.395
0.375
26.4
19
0.271
0.365
30.0
0.296
0.437
32.1
20
0.388
0.379
22.9
0.306
0.426
36.2
21
0.309
0.374
19.8
0.321
0.427
43.1
22
0.362
0.382
13.1
0.337
0.394
48.0
23
0.363
0.341
14.3
0.366
0.397
38.4
24
0.416
0.335
10.9
0.382
0.369
34.0
25
0.288
0.386
36.2
0.302
0.442
32.1
26
0.325
0.400
26.4
0.319
0.444
43.1
27
0.334
0.383
26.4
0.324
0.420
40.6
28
0.369
0.368
14.3
0.343
0.406
45.6
29
0.393
0.350
18.3
0.375
0.402
38.4
30
0.426
0.348
14.3
0.399
0.384
32.1
31
0.311
0.412
38.4
0.310
0.450
36.2
32
0.332
0.420
34.0
0.325
0.452
43.1
33
0.352
0.373
30.0
0.335
0.427
40.6
34
0.381
0.378
24.6
0.360
0.391
43.1
35
0.400
0.363
24.6
0.373
0.398
43.1
36
0.415
0.343
15.6
0.396
0.386
40.6
Red–tungsten
1
0.528
0.309
15.6
0.557
0.308
14.3
2
0.529
0.319
13.1
0.549
0.313
13.1
3
0.523
0.312
9.0
0.541
0.306
13.1
4
0.466
0.300
5.8
0.545
0.306
13.1
5
0.363
0.292
2.7
0.528
0.298
8.1
6
0.307
0.322
1.5
0.310
0.316
1.7
7
0.522
0.335
19.8
0.527
0.323
16.9
8
0.502
0.323
13.1
0.513
0.330
14.3
9
0.490
0.311
8.1
0.528
0.332
13.1
10
0.466
0.322
6.6
0.490
0.310
16.9
11
0.355
0.330
5.8
0.443
0.337
16.9
12
0.300
0.318
3.6
0.367
0.366
15.6
13
0.520
0.344
16.9
0.486
0.335
19.8
14
0.506
0.327
14.3
0.519
0.334
16.9
15
0.439
0.329
10.9
0.511
0.338
19.8
16
0.310
0.318
6.6
0.502
0.378
22.9
17
0.305
0.317
6.6
0.440
0.362
22.9
18
0.293
0.344
4.1
0.368
0.363
15.6
19
0.511
0.372
19.8
0.493
0.351
22.9
20
0.471
0.365
18.3
0.509
0.357
28.1
21
0.402
0.359
14.3
0.496
0.357
28.1
22
0.302
0.339
14.3
0.458
0.368
30.0
23
0.302
0.346
10.0
0.430
0.372
28.1
24
0.286
0.362
5.8
0.356
0.365
34.0
25
0.497
0.363
19.8
0.517
0.389
26.4
26
0.421
0.354
21.3
0.504
0.390
30.0
27
0.350
0.344
19.8
0.486
0.386
26.4
28
0.301
0.343
18.3
0.450
0.374
32.1
29
0.299
0.366
12.0
0.409
0.372
36.2
30
0.288
0.382
9.0
0.350
0.361
28.1
31
0.506
0.379
30.0
0.513
0.397
30.0
32
0.404
0.349
17.0
0.486
0.369
30.0
33
0.352
0.352
19.8
0.481
0.379
30.0
34
0.339
0.352
15.6
0.453
0.382
36.2
35
0.305
0.373
17.0
0.410
0.380
34.0
36
0.283
0.379
12.0
0.365
0.381
32.1
Purple–tungsten
1
0.415
0.284
12.0
0.474
0.262
12.0
2
0.456
0.275
10.9
0.465
0.256
10.0
3
0.440
0.259
8.1
0.502
0.266
10.9
4
0.417
0.272
4.1
0.500
0.277
9.0
5
0.354
0.282
4.1
0.490
0.277
8.1
6
0.328
0.315
1.7
0.310
0.316
3.6
7
0.437
0.282
12.0
0.497
0.266
10.9
8
0.439
0.284
10.9
0.466
0.269
12.0
9
0.445
0.271
9.0
0.532
0.288
12.0
10
0.382
0.272
5.8
0.472
0.296
14.3
11
0.357
0.321
4.6
0.447
0.308
14.3
12
0.317
0.322
2.4
0.344
0.344
13.1
13
0.450
0.271
14.3
0.474
0.285
14.3
14
0.438
0.285
10.0
0.465
0.282
14.3
15
0.430
0.278
10.9
0.454
0.292
14.3
16
0.358
0.304
8.1
0.467
0.307
16.9
17
0.330
0.323
4.6
0.430
0.334
16.9
18
0.291
0.332
3.6
0.346
0.359
16.9
19
0.442
0.286
15.6
0.470
0.293
15.6
20
0.426
0.297
15.6
0.480
0.294
16.9
21
0.370
0.317
10.9
0.492
0.326
19.8
22
0.334
0.332
9.0
0.461
0.356
24.6
23
0.299
0.332
10.0
0.410
0.345
26.4
24
0.300
0.346
5.8
0.376
0.368
28.1
25
0.459
0.296
15.6
0.481
0.304
19.8
26
0.405
0.319
18.3
0.489
0.312
18.3
27
0.342
0.345
15.6
0.472
0.321
21.3
28
0.346
0.356
12.0
0.439
0.337
24.6
29
0.305
0.368
10.9
0.404
0.346
28.1
30
0.292
0.355
7.3
0.358
0.368
32.1
31
0.461
0.309
18.3
0.498
0.339
18.3
32
0.354
0.314
18.3
0.490
0.335
21.3
33
0.344
0.330
15.6
0.483
0.343
24.6
34
0.332
0.357
13.1
0.450
0.357
24.6
35
0.295
0.368
14.3
0.401
0.349
30.0
36
0.288
0.368
9.0
0.376
0.383
32.1
Table V
Individual differences in Munsell hue, value, and chroma of matching
responses to selected cells; subjects 1, 2, and 3 viewed the chromatic
surround first; subjects 4, 5, and 6 viewed the dark surround first;
Experiment III.
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