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Contrast Checker MCP server

by ogSINGH·io.github.ogSINGH/contrast-checker-mcp·v1.0.1
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MCP - WCAG 2.1 color contrast checker - contrast ratios, compliance and accessible color suggestions

B75/100grade B
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Safety scan
B75/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

Contrast Checker tools (3)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • check_contrast

    Check the contrast ratio between two colors and evaluate WCAG 2.1 compliance.

  • parse_color

    Parse a color string and return it in hex, rgb, and hsl formats.

  • suggest_accessible_color

    Suggest a replacement color that meets a WCAG contrast target.

Public scan report

scanner v0.1.10 · 2026-09-28 · same rubric, same numbers if you re-run it

no findings
  • Code scan7 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 215 days ago4/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install Contrast Checker in Claude Code, Cursor or VS Code

Runs npx -y contrast-checker-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add contrast-checker-mcp -- npx -y contrast-checker-mcp
Add to Cursor

Contrast Checker: common questions

Is Contrast Checker MCP server safe?
Mostly: it is graded B (75/100). Read the Contrast Checker safety report
How do I install Contrast Checker?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Contrast Checker need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Contrast Checker maintained?
The last commit was 230 days ago (2026-02-25). The latest release is v1.0.1.

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