# io.github.ogSINGH/contrast-checker-mcp

> Use this tool when you need to evaluate the accessibility of color combinations in digital designs, ensuring compliance with WCAG 2.1 guidelines. It calculates contrast ratios, checks for compliance, and provides suggestions for accessible colors. Ideal for designers and developers seeking to create inclusive and usable interfaces, this tool takes color palettes as input and outputs contrast ratios, compliance reports, and accessible color recommendations.

Canonical page: https://skillsregistry.net/skills/io-github-ogsingh-contrast-checker-mcp  
JSON: https://api.skillsregistry.net/v1/skills/io-github-ogsingh-contrast-checker-mcp

## Description

MCP - WCAG 2.1 color contrast checker - contrast ratios, compliance and accessible color suggestions

## Trust

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

## Facts

- **Version:** 1.0.1
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-09-19

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.github.ogSINGH%2Fcontrast-checker-mcp)
- **Repository:** <https://github.com/ogSINGH/contrast-checker-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": "io-github-ogsingh-contrast-checker-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/io-github-ogsingh-contrast-checker-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/io-github-ogsingh-contrast-checker-mcp/pull`

---
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