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color-alpha

v2.1.1

Published

Change alpha value of a color string

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Links

Git

Maintainers

dfcreativedfcreativedydy

Keywords

coloralphaopacitycsscss-colorcolor-spacecolor-parsecolor-manipulatechannel

Readme

color-alpha test size stable

Change alpha of a color.

$ npm install color-alpha

import α from 'color-alpha'
α('white', .4); // 'rgba(255,255,255, 0.4)'
α('oklch(0.628 0.258 29.234)', .3); // 'oklch(0.628 0.258 29.234 / 0.3)'
α('rgba(244, 244, 244, .3)'); // 'rgba(244,244,244, 0.3)' — no alpha reads the color's own

Input color is parsed with color-parse: legacy rgb/hsl keep comma syntax, modern spaces (lab, oklch, color(display-p3 …) etc.) serialize with css slash syntax. Unparseable input returns undefined.