IEVref:845-02-34ID:
Language:enStatus: Obsolete
Term: Helmholtz-Kohlrausch phenomenon
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Definition: change in brightness of perceived colour produced by increasing the purity of a colour stimulus while keeping its luminance constant within the range of photopic vision

NOTE – For related perceived colours, a change in lightness can also occur when the purity is increased while keeping the luminance factor of the colour stimulus constant.


Publication date:1987
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