color-palette-api
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Color palette generation API — harmonies, gradients, contrast checking, WCAG accessibility scoring, CSS/Tailwind output. Zero external dependencies.
Quick Start
npm install && npm start # http://localhost:4000
Endpoints
Convert
curl http://localhost:4000/api/v1/convert/ff6b35
# → {"hex":"#ff6b35","rgb":{"r":255,"g":107,"b":53},"hsl":{"h":16,"s":100,"l":60}}
Color Harmonies
# Types: complementary, analogous, triadic, split, tetradic, monochromatic
curl http://localhost:4000/api/v1/harmony/complementary/ff6b35
curl http://localhost:4000/api/v1/harmony/triadic/3498db
curl http://localhost:4000/api/v1/harmony/monochromatic/e74c3c?count=7
Gradient
curl "http://localhost:4000/api/v1/gradient/ff6b35/3498db?steps=7"
# → colors array + CSS gradient string
Contrast / WCAG Accessibility
curl http://localhost:4000/api/v1/contrast/000000/ffffff
# → {"ratio":21,"AA_normal":true,"AA_large":true,"AAA_normal":true,"AAA_large":true}
curl http://localhost:4000/api/v1/contrast/ff6b35/ffffff
# → Check if your orange text passes accessibility on white background
Random Palette
curl "http://localhost:4000/api/v1/random?count=5"
CSS Variables
curl -X POST http://localhost:4000/api/v1/css \
-H "Content-Type: application/json" \
-d '{"colors":["#ff6b35","#3498db","#2ecc71"], "name":"brand"}'
Tailwind Config
curl -X POST http://localhost:4000/api/v1/tailwind \
-H "Content-Type: application/json" \
-d '{"colors":["#fef3c7","#fde68a","#fcd34d","#fbbf24","#f59e0b","#d97706","#b45309","#92400e","#78350f","#451a03"], "name":"amber"}'
License
MIT
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