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Connect Color Contrast Checker (Alternative) to your AI

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get mathematically accurate accessibility checks for your UI designs.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 1 capability

We ship only the actions that matter.

Capability set01 / 01

01

1 capability in this set.

Part of 1 available through colord.

  1. 01

    Check color contrast

    This capability calculates the exact WCAG 2.1 contrast ratio between a foreground and background color. It returns the specific ratio, AA/AAA compliance for normal and large text, and a clear pass or fail verdict.

Real work

What teams actually run

01

Coding UI Components

Check if your button text colors meet AA standards while writing CSS.

02

Design System Validation

Verify that a new brand color palette works for all text types.

03

Accessibility Auditing

Confirm that a website meets AAA requirements for legal compliance.

04

Dark Mode Testing

Ensure color swaps in dark mode don't break readability standards.

Automate a task

Put colord to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

colord works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put colord to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

1021ms average. Fast in production.

colord is checked daily against the live service.

Daily averagePeak 1273ms
Oct 3Today
Fastest day
834ms
Slowest day
1273ms
14-day trend
Stable+1%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 1 capability arrives ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of colord, so you can see the experience inside your AI.

It does not authenticate your account with colord. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

colord Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_hc2RovnBSudbXvkpfLpH4ef2sc9X9Pt3zfhUEHq9/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 — colord capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "color-contrast-checker-alternative-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_hc2RovnBSudbXvkpfLpH4ef2sc9X9Pt3zfhUEHq9/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up colord in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work colord owners hand off.

This MCP is built for professionals who need to guarantee UI accessibility without manual math.

  • 01

    Frontend Developers

    They use it to verify CSS color values against accessibility standards during coding.

  • 02

    UI/UX Designers

    They check color palettes to ensure they meet AAA requirements before handoff.

  • 03

    Accessibility Auditors

    They use the precise ratios to validate compliance for legal or technical audits.

FAQ

Questions colord owners ask.

  • 01

    Can my AI calculate color contrast on its own?

    No, AI models often hallucinate or approximate mathematical ratios. This MCP uses the official WCAG 2.1 formula to ensure the math is exact.

  • 02

    What color formats does this MCP support?

    You can use HEX, RGB, HSL, or CSS named colors.

  • 03

    Does it check for both AA and AAA standards?

    Yes, it checks AA and AAA compliance for both normal text and large text simultaneously.

  • 04

    How is the contrast ratio calculated?

    The MCP uses the official W3C relative luminance formula to provide a precise ratio to two decimal places.

  • 05

    Which AI clients can use this MCP?

    You can connect this MCP to any compatible client including Claude, Cursor, Windsurf, and VS Code.

  • 06

    My AI says this color combination passes WCAG. Should I trust it?

    No. LLMs cannot reliably calculate relative luminance. they approximate. This engine uses the exact W3C formula: L = 0.2126R + 0.7152G + 0.0722*B with sRGB gamma correction. Trust the math, not the prediction.

  • 07

    What's the difference between AA and AAA levels?

    AA requires 4.5:1 contrast for normal text. the legal minimum in most countries. AAA requires 7:1. the gold standard for maximum readability. Large text (18pt+) has relaxed thresholds: 3:1 for AA, 4.5:1 for AAA.

  • 08

    Can I mix color formats? Like HEX for foreground and a CSS name for background?

    Absolutely. Pass '#333333' as foreground and 'white' as background, or 'rgb(0,0,0)' with 'hsl(0,0%,95%)'. the engine normalizes everything internally.

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