As a basis for preparing color specifications for paints, a study was made of observers and conditions in relation to grading color differences and selecting tolerances for a green paint. Simple color difference formulas gave correlation with visual observations as good as or better than complicated formulas. There was no appreciable difference between results under north daylight and an artificial source of north daylight. Color requirement limits determined by inexperienced observers were about the same order as for experienced observers. The study indicates that in many cases it may not be necessary to prepare a very large number of colors in the preparation of color specifications. Time was saved in the present study by the use of one-dimensional color series to determine color requirement limits.
© 1951 Optical Society of AmericaFull Article | PDF Article
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