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The CIELAB color space, also referred to as L*a*b*, is a color space defined by the International Commission on Illumination (abbreviated CIE) in 1976. [ a ] It expresses color as three values: L* for perceptual lightness and a* and b* for the four unique colors of human vision: red, green, blue and yellow.
It is able to store a wider range of color values than sRGB. The Wide Gamut color space is an expanded version of the Adobe RGB color space, developed in 1998. As a comparison, the Adobe Wide Gamut RGB color space encompasses 77.6% of the visible colors specified by the Lab color space, whilst the standard Adobe RGB color space covers just 50.6%.
English: The sRGB gamut plotted within the CIE LAB color space. L is the vertical axis; a and b are the horizontal axes. L is the vertical axis; a and b are the horizontal axes. The illuminant for the material is D65, but there are also additional lights shining upon it, as well as some ambient glow.
Oklab's model is fitted with improved color appearance data: CAM16 data for lightness and chroma, and IPT data for hue. The new fit addresses issues such as unexpected hue and lightness changes in blue colors present in the CIELAB color space, simplifying the creation of color schemes and smoother color gradients. [1] [7] [4]
English: The visible gamut plotted within the CIELAB color space. a and b are the horizontal axes. L is the vertical axis. L is the vertical axis. Uses D65 whitepoint.
The CIE 1976 color difference definition was extended to address perceptual non-uniformities, while retaining the CIELAB color space, by the introduction of application-specific parametric weighting factors k L, k C and k H, and functions S L, S C, and S H derived from an automotive paint test's tolerance data. [11]
Pages in category "Color space" The following 80 pages are in this category, out of 80 total. ... CIELAB color space; CIELUV; CMYK color model; Color appearance model;
A color space in which the perceptual difference between colors is directly related to distances between colors as represented by points in the color space, i.e. a uniform color space. [12] [13] A color space in which colors are unambiguous, that is, where the interpretations of colors in the space are colorimetrically defined without reference ...