# Accessible Color Contrast MCP

> Use this tool when you need to ensure visual accessibility and compliance with WCAG standards by checking color contrast ratios between text and background pairs. It helps solve problems related to readability and accessibility by determining optimal text colors and validating color combinations. The tool takes color pairs as input and outputs accessibility compliance results, making it ideal for use in web design, digital product development, and accessibility testing contexts.

Canonical page: https://skillsregistry.net/skills/ryelle-a11y-color-contrast-mcp  
JSON: https://api.skillsregistry.net/v1/skills/ryelle-a11y-color-contrast-mcp

## Description

Enables checking WCAG color contrast ratios and accessibility compliance between color pairs. Helps determine optimal text colors for backgrounds and validates color combinations meet accessibility standards.

## Trust

- **Trust score (0–1):** 1.00
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-09-19

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/a1tvtx2nme)
- **Repository:** <https://github.com/ryelle/a11y-color-contrast-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "ryelle-a11y-color-contrast-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/ryelle-a11y-color-contrast-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/ryelle-a11y-color-contrast-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt