CIE 1976 UCS Diagram /∆E*94 Color difference formula (CIE 1994) - Part IV - Precise Color Communicat
The CIE 1976 UCS Diagram was defined by the CIE in 1976. It is intended to provide a perceptually more uniform color spacing for colors at approximately the same luminance. The values of u' and v' can be calculated from the tristimulus values XYZ (or ) or...