• PASS
  • FAIL
  • DATA
  • HUMAN

How to audit WCAG color compliance with your AI

Connect the Color Contrast Checker once. From there, your AI handles the math for every hex pair you provide.

Ask AI about this page

Short answer

How can I use AI to check WCAG color compliance?

Paste your hex codes into your AI client and ask it to check the contrast. It uses the contrast tool to tell you if the pairs meet AA or AAA standards. You'll see exactly which combinations pass or fail.

The audit results.

What you get from the check.

The AI processes the hex codes and delivers these specific outcomes.

PASS

Compliance confirmation

The AI identifies hex pairs that meet AA or AAA levels. You get a list of safe combinations for your UI.

FAIL

Accessibility warnings

The tool flags any combinations that fall below the required contrast ratios. This tells you where your design breaks accessibility rules.

DATA

Exact contrast ratios

Your agent provides the specific numerical ratios for every pair. This helps you document compliance for audits.

HUMAN

Design decisions

The AI identifies the failures, but you decide which colors to swap to fix the visual brand. You handle the creative work.

The workflow

What your AI does when hex codes arrive.

Your AI takes your color data and runs it through a specific verification process.

  1. Receive hex pairs

    Your agent takes the hex codes you provide in chat, whether they come from a design spec or a list.

    check_color_contrast

  2. Calculate ratios

    The tool calculates the luminance and contrast ratio for each foreground and background pair.

    check_color_contrast

  3. Compare to WCAG

    The AI checks those ratios against the specific AA and AAA thresholds for text and UI components.

    check_color_contrast

  4. Report findings

    Your agent summarizes the results, highlighting exactly which pairs pass or fail the audit.

    check_color_contrast

Try it

Copy these to start.

Use these prompts to kick off your audit.

Starting points

Swap out the hex codes in these examples with the actual colors from your design file.

WCAG Color Contrast Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_ToTQpdJuObTgdPgJyLWHlH7B6StfiSmankHl08eC/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — WCAG Color Contrast capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "color-contrast-checker-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_ToTQpdJuObTgdPgJyLWHlH7B6StfiSmankHl08eC/mcp"
    }
  }
}
Copy into chat04

  • Check if #FFFFFF and #000000 meet WCAG AAA standards.

  • Audit these hex pairs for AA compliance: #3498db and #2c3e50, #e74c3c and #ecf0f1.

  • Does the combination of #7f8c8d and #ffffff pass the AA contrast test?

  • Run a contrast check on this list of colors from my Figma file: #121212, #ffffff, #ffcc00.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect Color Contrast Checker once, then ask.

One click connects the MCP to your client. Your credentials stay encrypted, and you can start auditing immediately.

Connect Color Contrast Checker to your AI

FAQ

How this task behaves.

  • 01

    Can the AI automatically change the colors in my CSS file?

    No. The AI only checks the contrast ratios. You must manually apply any color changes to your code or design files.

  • 02

    Does it check for color blindness simulation?

    No. This tool specifically checks WCAG contrast ratios. It does not simulate how colors appear to users with different types of color vision deficiency.

  • 03

    Can I check multiple colors at once?

    Yes. You can provide a list of multiple hex pairs in a single prompt for the AI to process.

  • 04

    What is the difference between AA and AAA?

    AA is the standard requirement for most web content, while AAA is a higher, more stringent level of accessibility. The AI checks against both.

  • 05

    Can the AI fix my design for me?

    No. The AI identifies the failures and provides the math, but the actual design work remains with you.

  • More questions about Color Contrast Checker? The Connector page answers them. See everything the Color Contrast Checker Connector can do

Connect WCAG Color Contrast to Claude, Cursor, ChatGPT & more