Color Blind Website Checker
Test how your website appears to people with color vision deficiencies. Analyze live websites with advanced zoom controls and full-screen preview mode.
Website URL
Vision Type
Zoom Controls
Key Features of Our Website Accessibility Checker
Instantly inspect how your Web App, SaaS, or e-commerce store is experienced by users with color vision deficiencies.
Live URL Rendering
Analyze live public URLs in real-time. No browser extensions or local software installations required.
4 CVD Vision Models
Test for Deuteranopia (green-blind), Protanopia (red-blind), Tritanopia (blue-blind), and Achromatopsia.
100% Private Inspection
Your inspection session is secure. We never record, store, or log the internal data of tested websites.
Responsive Zoom Controls
Scale viewports from 50% to 200% or launch full-screen mode to test UI elements, maps, and dashboards.
Why Colorblind Accessibility (WCAG 2.1) Matters for Your Website
Color vision deficiency (CVD) affects over 300 million people worldwide β approximately 8% of men and 0.5% of women. When a website relies solely on color to convey critical information (such as form error highlights or stock status), colorblind visitors struggle to convert.
1 in 12 men and 1 in 200 women experience red-green or blue-yellow colorblindness.
Web accessibility laws (ADA, Section 508, EAA) mandate non-color dependent UI indicators.
Accessible forms, buttons, and checkout flows directly reduce cart abandonment rates.
Common Web Design Pitfalls & How to Fix Them
Avoid these frequent accessibility mistakes to ensure your website passesWCAG 2.1 inspection.
Form Validation Errors
Mistake: Highlighting required or invalid text fields using only a thin red border. Protanopia and Deuteranopia users cannot distinguish red borders from dark gray ones.
Unstyled Text Links
Mistake: Distinguishing body text links solely by color (e.g., blue text without underlines). Red-green or blue-blind users may miss interactive links.
underline) or bold styling on text hyperlinks within body copy.
Red/Green Dashboard Charts
Mistake: Using pure Red vs. Green lines for stock charts, status badges (Online/Offline), or analytics dashboards.
How to Test Your Website in 4 Simple Steps
Follow this workflow to audit any URL for color vision deficiencies.
Paste your public website, staging URL, or landing page link.
Choose Deuteranopia, Protanopia, Tritanopia, or Monochromacy.
Zoom in or switch to Full-Screen to check buttons, forms, and charts.
Copy the share link or test contrast ratios with our Contrast Checker.
FAQ
Common questions about testing website colorblind accessibility.
How does the Color Blind Website Checker work?
Our website checker loads a live preview of any URL and applies real-time SVG colorblindness matrix filters (Deuteranopia, Protanopia, Tritanopia, and Monochromacy). This lets developers and UX designers see exactly how their site looks to colorblind visitors.
How to fix colorblind accessibility issues on my website?
To pass WCAG 2.1 guidelines, never rely solely on Red vs. Green color coding for error/success messages. Always pair color indicators with text labels, icons, or high-contrast border patterns. Use our WCAG Contrast Checker tool to verify text readability.
Does this website checker store my tested site URL or data?
No, 100% private. We do not log, record, or store the contents or URLs of tested websites. All filter Matrix calculations take place entirely in client-side memory.