Color Blindness Simulator – Test Your Designs
Simulate 9 types of color vision deficiency including Protanopia, Deuteranopia, Tritanopia, and more. Upload any image to see how people with color blindness perceive your designs. Ensure WCAG compliance and create accessible, inclusive interfaces for everyone.
Advertisement
Ad blocked by browser
Examples of Real-World Usage
6 real-world examples
Web & UI Designers
Test interface designs, color schemes, and visual hierarchies to ensure accessibility for users with color vision deficiencies.
Developers & QA Teams
Verify that color-coded information (charts, status indicators, alerts) is distinguishable for all users during testing.
Content Creators & Marketers
Check infographics, presentations, and marketing materials to ensure your message reaches everyone effectively.
Accessibility Specialists
Audit websites and applications for WCAG compliance and demonstrate accessibility issues to stakeholders.
Product Managers
Make informed decisions about color palettes and ensure products are inclusive for all potential users.
Educators & Students
Learn about color blindness, understand its impact, and teach inclusive design principles.
Comprehensive Color Blindness Simulation Features
Test your designs with our advanced color blindness simulator. Support for 9 different types, real-time processing, and side-by-side comparison to ensure your content is accessible to everyone.
9 Color Blindness Types
Simulate Protanopia, Deuteranopia, Tritanopia, and 6 other types of color vision deficiency
Real-Time Image Processing
Upload any image and instantly see how it appears to people with color blindness
Side-by-Side Comparison
Compare original and simulated images side by side to identify accessibility issues
Download Simulations
Save simulated images for presentations, documentation, or testing purposes
Detailed Information
Learn about each type with descriptions, prevalence rates, and severity levels
Design Guidelines
Get practical tips for creating colorblind-friendly designs and interfaces
WCAG Compliance
Ensure your designs meet accessibility standards and reach a wider audience
Client-Side Processing
All processing happens in your browser - your images remain private and secure
How to Use
Simple 6-step process
Step 1
Upload an image, screenshot, or design mockup using the file upload button
Step 2
Select a color blindness type from the tabs to see how people with that condition perceive colors
Step 3
Compare the original and simulated images side by side to identify potential accessibility issues
Step 4
Review the detailed information about each type including prevalence and description
Step 5
Download the simulated image for documentation, testing, or sharing with your team
Step 6
Apply the design tips provided to make your interfaces accessible to all users
Frequently Asked Questions
Everything you need to know about our process, pricing, and technical capabilities.
See Full FAQOur simulator uses scientifically-based color transformation matrices that approximate how people with different types of color blindness perceive colors. While it provides a close approximation, individual experiences may vary. The simulation is based on research and widely-used algorithms in the accessibility field.
The tool simulates 9 different types: Protanopia & Protanomaly: Red color blindness (mild to severe) Deuteranopia & Deuteranomaly: Green color blindness (mild to severe) Tritanopia & Tritanomaly: Blue color blindness (mild to severe) Achromatopsia & Achromatomaly: Total and partial color blindness
No, all image processing happens entirely in your browser using client-side JavaScript. Your images are never uploaded to any server, ensuring complete privacy and security. The image data only exists in your browser's memory while you're using the tool.
The tool supports all common image formats including JPG, PNG, GIF, WebP, and more. For best results, use high-quality images with clear colors. Screenshots, UI mockups, infographics, and photographs all work great.
Key tips for colorblind-friendly design: Don't rely solely on color to convey information Use patterns, textures, icons, or text labels alongside colors Maintain high contrast ratios (WCAG recommends 4.5:1 for text) Avoid red-green and blue-purple color combinations Test with colorblind simulators like this one Consider using colorblind-safe palettes
Approximately 8% of males and 0.5% of females have some form of color vision deficiency - that's about 300 million people worldwide. Designing with color blindness in mind ensures your content is accessible to everyone, improves overall usability, and may be required for WCAG compliance in certain contexts.
Still have questions?
Can't find what you're looking for? We're here to help you get the answers you need.