color-mcp

MCP server: convert colors between hex/rgb/hsl and compute WCAG contrast ratios. No external dependencies.

Tools

convert

{ "color": "#ff8800" }

→

{
  "hex": "#ff8800",
  "rgb": { "r": 255, "g": 136, "b": 0 },
  "hsl": { "h": 32, "s": 100, "l": 50 },
  "rgb_string": "rgb(255, 136, 0)",
  "hsl_string": "hsl(32, 100%, 50%)"
}

Accepts #rgb, #rrggbb, rgb(r, g, b), or hsl(h, s%, l%) input.

contrast

{ "foreground": "#000000", "background": "#ffffff" }

→

{
  "ratio": 21,
  "aa_normal": true, "aa_large": true,
  "aaa_normal": true, "aaa_large": true
}

Thresholds follow WCAG 2.x: AA normal ≥ 4.5, AA large ≥ 3, AAA normal ≥ 7, AAA large ≥ 4.5.

Configure

{ "mcpServers": { "color": { "command": "npx", "args": ["-y", "@mukundakatta/color-mcp"] } } }

License

MIT.