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The Color API

FreeLiveLast verified 24 Sept 2026
Converts colors between hex, RGB, HSL, HSV and CMYK, names them, and builds color schemes.
Read the docs

Example request

curl -s 'https://www.thecolorapi.com/id?hex=24B1E0'

Free tier, in plain English

Completely free with no key; the project is funded by optional developer sponsorship, not a paid tier.

Alternatives in Colors

ColorMagicSearches a library of AI-generated color palettes by tag or keyword, returns hex codes.FreeSerialif ColorConverts a hex/RGB/HSL color to its complementary, grayscale and best-contrast text colors.