... 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, ... *b) color space and color difference formula.3. Adopted d/o illuminating--geometrical viewing conditions.Diameter of the globe of ...