CMC Delta E 2:1

CMC Delata E 2:1 is an improved color difference metric based on the CIE Delta E 76 metric developed in 1984 by the Colour Measurement Committee of the Society of Dyers and Colourists. It has two parameters lightness (l) and chroma (c), with the 2:1 values being those for for acceptability, and the 1:1 being the threshold of imperceptibility.

Since it is based on L*a*b* space, a reference white needs to be chosen to compute this Readout value.

Details of white point configuration.

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