Global Color Registry

Explore the OpenColors Registry

Browse named colors with owners, dates, and votes. Copy-ready HEX, RGB, HSL, CSS, and Tailwind tokens for designers and developers. Jump directly to visualize, open on the canvas, or lock a new name.

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Visualize

See this color on real products

Visualize this color

Color Palette

Colors that compliment your color

Contrast Checker

WCAG 2.1 thresholds for light and dark surfaces

AA / AAA

White background

WCAG contrast

5.7:1

5.7

contrast ratio on a white background

Small text

AAA

Large text

AAA

UI element

AAA

Black background

WCAG contrast

3.69:1

3.69

contrast ratio on a black background

Small text

AAA

Large text

AAA

UI element

AAA

Color Blindness Simulator

Preview common vision types for this hue

#7C3AED

Protanopia

Simulated vision

#5F5FC2

#7C3AED#5F5FC2

Deuteranopia

Simulated vision

#6368B7

#7C3AED#6368B7

Tritanopia

Simulated vision

#799F98

#7C3AED#799F98

Achromatopsia

Simulated vision

#626262

#7C3AED#626262

For developers

Every color is available via the OpenColors API and MCP tools. No key required for reads.

fetch('https://opencolors.org/api/v1/color/FF0055')
  .then(res => res.json())
  .then(data => console.log(data.color));

View API docs•Generate palettes•Visualize on products

Design token quick-copy

Open any card to copy HEX, RGB, HSL, a CSS variable, or a Tailwind utility. Use “Open on canvas” to view in the 16.7M grid.

Copy HEX/RGB/HSLCSS var & TailwindOpen on canvasVisualize & name