Example image of eyePlorer eyePlorer map for 'Color difference': Color Metric (mathematics) Color space Device independent Euclidean distance Delta (letter) Greek alphabet International Commission on Illumination Ewald Hering Hermann von Helmholtz Lab color space Just-noticeable difference Gamut CIE 1931 color space Lightness (color) MacAdam ellipse Ellipse CIELUV color space Ellipsoid Absolute color space CIE 1964 color space ICAM (Color Appearance Model) ColorSync Adams chromatic valence color space Display contrast Flag of Poland Colorfulness Color rendering index Metamerism (color) Color temperature RGB color model