Abstract

A collection of more than one thousand samples of dyed wool flannel has been arranged according to the OSA renotations of the Munsell colors. The choice of sample spacing is the same as that of the Munsell Book of Color, consisting of the even chroma steps at values one to eight for forty hues. The samples were measured by means of the Hardy Recording Spectrophotometer and the Automatic Tristimulus Integrator. Trichromatic data were converted to Munsell renotation by means of the charts prepared for the OSA. Tolerances of 0.15 in value, 0.35 in chroma, and 1.0 hue step at 2 chroma, 0.8 at 4 chroma, and 0.5 at higher chroma were allowed. Because of the brightness of the dyes used, many samples having higher chromas than those of the Munsell Book were obtained. There are more samples in low values, though fewer in high values, than in this painted series of papers. Twelve acid dyestuffs chosen primarily for their light-fastness, brightness, and level dyeing properties were selected for dyeing the wool.

© 1951 Optical Society of America

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