Color Library

Eight thousand colours, measured.

Every sample carries all seven spaces, its perceptual metrics, what it scores against white and against black, how it reads under three kinds of colour blindness, and what it has been labelled. Filter on any of it.

Atlas 8,192 Spaces 7 Every figure precomputed Read the API reference →

Start from a colour you already have

Paste a colour in any format — hex, rgb(), hsl(), hwb(), lab(), lch(), oklab(), oklch(), color() or a CSS name. The atlas returns its nearest catalogued neighbours, measured in CIE Lab, each carrying everything the atlas knows — so you learn what your colour is before deciding whether to keep it.

Or from what it has to do

Ask for the job, not the coordinates. Each requirement carries the number it would leave behind, so the cost of asking for one more thing is visible before you ask for it.

Browse the atlas

Search by hex or id, or narrow by hue, lightness, chroma and the five label dimensions. Open any colour to see everything the atlas knows about it.

Filter inside results
Hue
Lightness
Chroma
Emotion
Art movement
AI mood
Design usage
WCAG
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