color-cie-de2000
color-cie-de2000 is a compiled Lisp function in `color.el
'.
(color-cie-de2000 COLOR1 COLOR2 &optional KL KC KH)
Return the CIEDE2000 color distance between COLOR1 and COLOR2.
Both COLOR1 and COLOR2 should be in CIE L*a*b* format, as
returned by `color-srgb-to-lab' or `color-xyz-to-lab'.