... coordinate x10, y10, z10;lightness L*;chrominance a*, b*;chromaticity C*ab;hue angle h*ab;dominant wavelength λd, excited purity Pe, ... color difference ΔE*ab, lightness difference ΔL*, chromaticity difference ΔC*ab, hue difference ΔH*ab, Hunter system L, a,b.2.Measure ISO ... CIE 1964 supplementary standard colorimetric system and CIE 1976 (L*a*b) color space and color difference formula.3. Adopted ...