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YIQ

NTSC Color
  • Y = luma
  • I = in-phase
  • Q = quadrature

When normalized:

  • Y is between 0 and 255
  • I and Q are between -128 and 128

When not normalized:

  • Y is between 0 and 1
  • I is between -0.5957 and 0.5957
  • Q is between -0.5226 and 0.5226

New Color​

Color.from('yiq', [y, i, q], {
  normalized: boolean, // optional, default = true
})

Conversion to​

.to('yiq', {
  normalize: boolean, // optional, default = true
  round: boolean,     // optional, default = true (ignored/false if not normalized)
})

Get methods​

.getY(): number
.getI(): number
.getQ(): number

JavaScript​

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

const color1 = Color.from('yiq', [105, 59, 128])
const color3 = color2.to('yiq')

const color4 = Color.from('yiq', [0.413, 0.2746, 0.5226], { normalized: false })

TypeScript​

import Color from 'chromaticity-color-utilities'

const c: Color.yiq = Color.from('yiq', [105, 59, 128])