Darken

Methods available are: rgb, hsv/value, hsl/lightness, hsi/intensity, hsp/perceived, cmyk, and cmyk2/black. rgb and cmyk modify all values.

These methods are intended to provide alternative ways of modifying a color versus changing the values directly, which can make more sense.

.modify('darken', {
  amount: number, // optional, 0 - 1, defaults to 0.5
  method: string, // optional, defaults to the original type or 'hsl' if type not directly supported
  round: boolean, // optional, defaults to true
})

JavaScript

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

const color2 = Color.from('rgb', [255, 0, 255, 200]).modify('darken', {
  method: 'lightness',
})
// rgb { r: 128, g: 0, b: 128, a: 200, bitDepth: 8, max: 255 }

const color2 = Color.from('rgb', [100, 0, 100]).modify('darken', {
  method: 'hsp',
  amount: 0.5
})
// rgb { r: 52, g: 0, b: 52, a: 255, bitDepth: 8, max: 255 }

TypeScript

import Color from 'chromaticity-color-utilities'

const color4: Color.rgb[] = Color.from('rgb', [255, 0, 255, 200])
  .modify('darken', { method: 'lightness' })