Inconsistent Delta E CMC Values in ColorShop X

Q: Why are my Delta E CMC values not always consistent for the same color pairs?

A: In the Delta E CMC formula the initial color (on the left) affects the shape of the tolerance ellipse. If you swap the left and right colors in the Delta Calculator it is likely that a different Delta E CMC will result. Note that using the standard Delta E Lab does not produce this effect because there is no dynamic ellipse calculated using this formula.

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