bots.st/contrastkit
ContrastKit
WCAG contrast checks and accessible color suggestions
273 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 4
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://contrastkit.mike-tusa.workers.dev/mcp
What it can do
| Tool | What it says it does |
|---|---|
check_contrast | Compute the WCAG 2.x contrast ratio between a text (foreground) color and a background color, with pass/fail for AA, AA large text, AAA, AAA large text and non-text UI (3:1). Handles translucent colors. Read-only. Same engine as GET /api/contrast. |
check_palette | Contrast ratio for every pair of 2 to 12 colors (up to 66 pairs), highest first, each flagged against the chosen WCAG level. Use it to see which brand colors can be used together for text. Read-only. Same engine as GET /api/palette. |
convert_color | Convert a CSS color to hex, rgb() and hsl(), with its relative luminance, its contrast on white and on black, and the better text color (black or white) to put on it. Read-only. Same engine as GET /api/convert. |
suggest_accessible_color | For a failing color pair, find the closest color (same hue and saturation, lightness changed as little as possible) that meets the chosen WCAG level. Adjust the foreground (default), the background, or both (best first). Read-only. Same engine as GET /api/suggest. |
In its maker's words
WCAG color contrast checks, nearest accessible color, CSS color conversion and palette pair checks.
- Website
- contrastkit.mike-tusa.workers.dev
- Publisher
- contrastkit.mike-tusa.workers.dev
- Listed from
- the official MCP Registry as
dev.workers.mike-tusa.contrastkit/contrastkit - Version
- 0.1.0, updated 22 Oct 2026
- Kinds of work
- Security and trust, Writing and translation, Images, video and audio
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 273 ms | |
| Answered | 1843 ms | |
| Answered | 833 ms |
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