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
Ready to Check Your Website
Enter a website URL in the sidebar to analyze how it appears to people with different types of color vision deficiencies.
What is a Color Blind Website Checker?
A Color Blind Website Checker is an essential tool for web accessibility that helps designers, developers, and website owners understand how their digital content appears to people with color vision deficiencies. Our advanced Color Blind Website Checker goes beyond simple color contrast checkers by providing real-time visual simulations of your website as seen through the eyes of individuals with different types of color blindness.
Color blindness affects approximately 8% of men and 0.5% of women worldwide, making it crucial for web professionals to ensure their websites are accessible to everyone. A comprehensive Color Blind Website Checker like RGBlind's tool helps identify potential accessibility barriers and ensures your website meets WCAG (Web Content Accessibility Guidelines) standards.
For comprehensive color accessibility testing, also try our Color Blindness Simulator for real-time image testing, Ishihara Color Vision Test for professional diagnosis, or Kids Ishihara Test designed for children.
How Our Color Blind Website Checker Works
When you enter a URL into our Color Blind Website Checker, our server instantly captures a live screenshot of the website using Puppeteer, a powerful browser automation tool. This ensures we capture the exact visual representation that your visitors see, including dynamic content, CSS styling, and responsive design elements. The tool then applies scientifically accurate color transformation matrices to simulate how people with protanopia, deuteranopia, tritanopia, and achromatopsia perceive your website.
Advanced Zoom and Full-Screen Features
Our Color Blind Website Checker includes professional-grade zoom controls ranging from 50% to 250%, allowing you to inspect fine details and small text for accessibility issues. The full-screen preview mode provides an immersive analysis experience, perfect for presentations or detailed reviews with stakeholders. All zoom levels and settings persist when switching between different vision types, ensuring a seamless workflow.
Benefits for Designers and Developers
Using our Color Blind Website Checker ensures your website meets WCAG 2.1 AA standards for color contrast and accessibility. By identifying potential issues early in the design process, you can create more inclusive digital experiences for all users. The instant visual feedback helps you make informed design decisions, test color combinations, and ensure your call-to-action buttons, navigation elements, and content remain distinguishable for users with color vision deficiencies.
How to Use the Website Checker
Enter Website URL
Type or paste any website URL including https:// in the sidebar input field.
Analyze Website
Click "Check Website" and wait while we capture a live screenshot and generate simulations.
Switch Vision Types
Select different color vision deficiencies from the sidebar to compare how each affects your website.
Use Zoom Controls
Zoom in to inspect details, enable full-screen mode, and download results for documentation.
Frequently Asked Questions
Everything you need to know about testing website accessibility for color vision deficiencies.
QHow accurate is the color blindness simulation?
Our Color Blind Website Checker uses scientifically accurate color transformation matrices based on established research in color vision deficiency. The simulations replicate how individuals with protanopia, deuteranopia, tritanopia, and achromatopsia perceive colors. While the simulation is highly accurate, individual experiences may vary slightly based on the severity and type of color vision deficiency.
QCan I test password-protected or private websites?
Currently, our tool captures screenshots of publicly accessible websites only. For testing private or password-protected sites, you can take your own screenshot and use our Color Blindness Simulator to upload and analyze the image. This gives you the same powerful simulation capabilities for any content you can screenshot.
QHow does the zoom feature help with accessibility testing?
The advanced zoom controls (50% to 250%) allow you to inspect fine details like small text, icon colors, button borders, and subtle color differences that might be problematic for users with color vision deficiencies. This is especially useful for checking if text remains readable, if call-to-action buttons stand out, and if navigation elements are distinguishable when viewed through different types of color blindness.
QIs this tool suitable for WCAG compliance testing?
Yes, our Color Blind Website Checker is an excellent starting point for WCAG 2.1 AA compliance testing. It helps you identify color-related accessibility issues, particularly for Success Criterion 1.4.1 (Use of Color) which requires that color is not the only visual means of conveying information. However, for complete WCAG compliance, you should also test contrast ratios using our WCAG Contrast Checker and follow other accessibility guidelines.