17-145

chromaticity coordinates

ratio of each of a set of 3 tristimulus values to their sum

Unit: 1

NOTE 1 As the sum of the 3 chromaticity coordinates is equal to 1, 2 of them are sufficient to define a chromaticity.

NOTE 2 In the CIE standard colorimetric systems, the chromaticity coordinates are represented by the symbols x, y, z and x10, y10, z10.

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