# WCAG Color Contrast MCP Server

> Use this tool when you need to ensure web accessibility by analyzing color contrast and compliance with WCAG guidelines. It calculates contrast ratios between color pairs, checks compliance levels, and analyzes luminance values to identify accessibility issues. Ideal for web developers and designers seeking to improve user experience for visually impaired users.

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

## Description

Enables accurate WCAG color contrast checking and accessibility analysis by calculating actual contrast ratios between color pairs, checking compliance levels, and analyzing luminance values for web accessibility.

## Trust

- **Trust score (0–1):** 0.99
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-09-28

## Source

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

## 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": "bryanberger-mcp-wcag-color-contrast"
    }
  }
}
```

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