Hunter L,a,b Values

Scales for the accurate measurement of color developed by Dr. Richard Hunter that provide an alternative to the CIE Lab L*a*b* scale. The Hunter L,a,b scales, like the CIE scales, utilize three values to create a three-axis graph on which the values can be plotted and color determined. The three values utilized by Hunter are L, or luminosity (the degree of lightness from black to white), ± a, the degree of redness or greenness on a scale from red to green, and ± b, the degree of yellowness to blueness on a scale from yellow to blue. These scales are based on the perception of color as a series of three oppositions: black vs. white, red vs. green, and yellow vs. blue. These scales are utilized to provide an accurate and consistent description of color.

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