CIE XYZ color space

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CIE XYZ color space

  • Figure 1
In studies of color cognition, CIE1931 XYZ color space is one of the first color space to be defined mathematically, and was established in 1931 by the International Commission on Illumination (CIE). Inside the CIE XYZ color space, the X, Y, and Z approximately correspond to the colors of red, green, and blue. This does not mean that their values are equivalent to red, green, and blue, but simply that they are parameters obtained from these colors.

(Figure 1)This is a chromaticity chart that demonstrates the CIE 1931 color space. The outer curved boundary is the trace of light in the spectrum (or monochromatic), and the wavelength is measured in nm.