Color API
A complete colour toolkit — convert between hex, RGB, HSL, HSV and CMYK with relative luminance, generate harmonious palettes (complementary, triadic, tetradic, analogous, monochromatic, shades), and compute WCAG contrast ratios with AA/AAA pass-fail for accessibility. Server-side, instant, no third-party services.
api.oanor.com/color-api
