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CIE L*a*b*

Derived from XYZ.

  • L* = lightness
  • a* = position between red and green (negative indicates green, positive red)
  • b* = position between blue and yellow (negative indicates blue, positive yellow)

When converting to most color types, you must supply color space and standard illuminant reference white. See available Color Spaces and Stardard Illuminants.

New Color​

Color.from('lab', [l, a, b])

Conversion to​

.to('lab',{
  colorSpace: string,     // optional, defaults to 'srgb' -- ignored if converting from xyz, luv
  referenceWhite: string, // optional, defaults to 'd65'
  round: boolean          // optional, defaults to true
})

Get methods​

.getL(): number
.getA(): number
.getB(): number

JavaScript​

const Color = require('chromaticity-color-utilities')

const color1 = Color.from('lab', [60, 98, -61])
const color3 = color2.to('lab')

const color4 = color1.to('rgb')
const color5 = color1.to('rgb', {
  colorSpace: 'adobergb',
  referenceWhite: 'd50',
})

TypeScript​

import Color from 'chromaticity-color-utilities'

const c: Color.lab = Color.from('lab', [60, 98, -61])