WCAG Contrast Checker Connector for AI agents.
3 live capabilities
Verify web accessibility compliance and color contrast ratios instantly.
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Why people use WCAG Contrast Checker
WCAG Contrast Checker for Web Accessibility Testing
With this Connector, you just describe the colors you're using to your agent. It handles the math and the logic, giving you a clear pass or fail status and even suggesting fixes. You get a fully compliant UI without the constant tab-switching.
What Vinkius changes
You get instant, accurate accessibility data without leaving your editor.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 6,800+ Connectors
- Real-world use case 01
Checking a new brand orange
A designer wants to know if a new brand orange works on a white background.
- Real-world use case 02
Fixing a failed button
A developer finds a button that fails accessibility during a test.
- Real-world use case 03
Bulk auditing a landing page
A QA engineer needs to verify that every primary color on a landing page is compliant.
Complete set · 3capabilities
The complete WCAG Contrast Checker capability set.
These are the exact actions your AI can choose when you ask it to work with WCAG Contrast Checker.
01—03
3 capabilities in this set.
Part of 3 available through WCAG Contrast Checker.
- 01 Capability
Calculate contrast
Determines the exact contrast ratio and accessibility pass/fail status for two specific colors. This gives you a clear yes or no on readability.
- 02 Capability
Find compliant suggestion
Suggests a new background color that meets a specific accessibility target by minimally adjusting the current color's lightness. It helps you fix issues without ruining your design.
- 03 Capability
Audit palette
Validates a collection of colors to ensure they all satisfy a specific accessibility standard. Use this to check your entire brand kit at once.
Where the request belongs
Work WCAG Contrast Checker can move forward.
This is for the frontend developer who's tired of accessibility bugs popping up during QA, the UI designer trying to keep a brand palette consistent, and the web auditor who needs to verify thousands of color pairs across a large site.
Frontend Developer
Debugging CSS to ensure buttons, links, and labels are readable for all users.
UI Designer
Validating a new brand palette for high-contrast requirements during the mockup phase.
Accessibility Auditor
Running bulk checks on a site's color scheme to ensure legal compliance.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
Browse ConnectorsColor Contrast Checker
Check WCAG color contrast compliance via AI. verify text readability against backgrounds for accessible, inclusive web design.
Color Space Converter
High-precision mathematical conversion between RGB, HSL, CMYK, LAB, OKLAB, and more.
Color Difference Engine
Calculate perceptual color differences using CIE76, CIEDE2000, and OKLAB models.
Rug & Room Proportion Calculator
Validate if rug dimensions follow professional interior design rules for floor borders and furniture anchoring.
US ADA Compliance Checker
Verify architectural elements against US ADA accessibility standards.
Stretch Factor Calculator
Calculate exact pixel stretching, aspect ratio matching, and pixel footprint when scaling resolutions.
Bring your own AI
Change the model, client or framework. Keep WCAG Contrast Checker connected.
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Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
Kiro -
Roo Code -
Zencoder -
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Amp -
Qodo -
Tabnine -
Pieces -
Sourcegraph Cody -
JetBrains -
Warp -
Amazon Q -
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BoltAI -
Raycast -
Jan -
LM Studio -
AnythingLLM -
Open WebUI -
Msty -
Cherry Studio -
LibreChat -
TypingMind -
Chorus -
5ire -
n8n -
LangChain -
LlamaIndex -
CrewAI -
Vercel AI SDK
Before you connect
Questions about WCAG Contrast Checker.
The practical details behind the request, access and result.
How does WCAG Contrast Checker help my web project?
It lets you instantly verify that your UI colors are readable. Your agent can check hex codes against accessibility standards so you don't have to do the math manually.
Can WCAG Contrast Checker check for the new APCA standards?
Yes, it calculates results for both the older WCAG 2.1 models and the newer APCA (WCAG 3.0) models to keep your designs future-proof.
How do I use WCAG Contrast Checker to fix a bad color?
Just ask your agent to suggest a compliant color for a specific pair. It will find a new background or text color that meets your target with minimal changes.
Does WCAG Contrast Checker work for dark mode?
Absolutely. It checks any color pair you provide, making it perfect for validating dark mode themes and high-contrast requirements.
Can I check an entire brand palette at once?
Yes, you can use the capability to audit a whole collection of colors. This ensures your entire brand kit meets accessibility standards consistently.
What are AA and AAA levels in WCAG Contrast Checker?
These are different levels of accessibility requirements. The capability checks your colors against these specific thresholds to ensure you meet your project's goals.
What standards does this capability support?
The capability supports WCAG 2.1 (Contrast Ratio) and WCAG 3.0 (APCA - Advanced Perceptual Contrast Algorithm).
How can I find a color that passes AA standards?
You can use the find_compliant_suggestion capability. Provide your current color and specify 'AA_NORMAL' as the target level.
Can I check multiple colors at once?
Yes, use the audit_palette capability by providing a JSON array of foreground colors and a single background color.
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