CIE Chromaticity Diagram
Updated 2026-08-08
INTRODUCTION
English translation pending.
CORE DEFINITION
The CIE Chromaticity Diagram is a standard color space chart defined by the International Commission on Illumination (CIE) in 1931. Its core elements include the horseshoe curve, which represents the spectral colors of monochromatic light; the x and y chromaticity coordinates, which express the hue and saturation of a color; the white point at the center of the diagram, which represents white; and the gamut, the triangular region enclosed by any three primary colors. The diagram turns subjective human color perception into objective, measurable mathematical coordinates and gives color management, display technology and the printing industry a shared language.
SCAFFOLDING EFFECT
Reduce cognitive load
- Locate a color precisely: convert the measured values into exact x and y chromaticity coordinates. - Compare device gamuts: overlay the triangles to see exactly which colors a device reproduces. - Standardize communication: always refer to coordinates instead of relying on subjective color names.
Anchor fast decisions
Built on the color matching functions of human vision. Visible light perception is mapped onto x and y chromaticity coordinates; the horseshoe boundary holds the pure spectral colors and any device gamut is the triangle its primaries enclose.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/CIE_1931_color_spaceverified
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