/color namespace · APlicious

Color API — conversion, palette generation, and WCAG contrast checking

The /color namespace covers format conversion, palette generation, and accessibility contrast checking — small, fast to integrate, free to start.

3color endpoints

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GET /api/v1/color/convert

const res = await fetch(
  'https://aplicious.com/api/v1/color/convert?hex=ff6c63&to=rgb',
  { headers: { 'X-API-Key': 'lapi_live_••••' } }
);
const { data } = await res.json();
// { rgb: { r: 255, g: 108, b: 99 } }

No credit card · Free tier forever · X-API-Key header auth

What's included in /color

Format conversion

Convert any color between hex, RGB, and HSL in a single call.

Palette generation

Generate complementary, analogous, or triadic palettes from a single base color.

WCAG contrast checking

Check whether a foreground/background color pair meets WCAG AA or AAA contrast requirements.

Design-tool friendly

Fast enough to call on every color picker interaction without noticeable lag.

One key, every namespace

Same key as the other 33 namespaces — no separate design-tool API relationship needed.

Start using the color API today

Free tier — 500 calls/month, no credit card. Upgrade when you need more.

Get free API key Explore /color docs

Frequently asked questions

Can I check accessibility contrast?

Yes — /contrast checks a foreground/background pair against WCAG AA/AAA thresholds.

Does it generate full palettes?

Yes — /palette generates complementary, analogous, or triadic palettes from a base color.

Is this free?

Yes — 500 calls/month forever, no credit card.

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