🎨 Hex Color Info API

Free No auth OpenAPI 3.1

Quick start

curl "https://hex-color.techtenstein.com/api/color?hex=FF5733"

Endpoints

• GET /api/color?hex={hex} — Full color info + palettes
• GET /health — Health check
• GET /openapi.json — OpenAPI 3.1 spec

Response fields

hex, rgb, hsl, name, luminance, contrast{on_white,on_black,readable_text_color,wcag_aa_normal,wcag_aaa_normal}, palette{complementary,analogous,triadic,tetradic,shades}

Example

{
  "hex": "#FF5733",
  "rgb": {"r": 255, "g": 87, "b": 51},
  "hsl": {"h": 11, "s": 100, "l": 60},
  "name": "tomato",
  "palette": {
    "complementary": "#33DBFF",
    "analogous": ["#FF9F33", "#FF3373"],
    ...
  }
}

Built by Techtenstein. MIT licensed. Source: GitHub.