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hue
attribute of a visual perception according to which an area appears to be similar to one of the colours red, yellow, green, and blue, or to a combination of adjacent pairs of these colours considered in a closed ring
Note 1 to entry: This entry was numbered 845-02-35 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-542 in CIE S 017:2011.