Developer Tools
Color Blindness Simulator
Upload an image or enter a hex color to see how it appears with different types of color vision deficiency.
🖼️
Click or drag & drop an image to simulate
Test your designs for color accessibility by simulating how they appear to users with different types of color vision deficiency. Supports image upload and single-color simulation across 6 vision types.
Features
6 Vision Types
Normal, Deuteranopia, Protanopia, Tritanopia, Achromatopsia, and Deuteranomaly simulation.
Image Mode
Upload any image to see how it renders for each vision type side-by-side.
Color Mode
Enter a hex color to see how it shifts under each type of color blindness.
Matrix-Based Simulation
Uses color transformation matrices for scientifically accurate simulation.
How to Use
- Switch to Image Mode or Color Mode.
- In Image Mode: drag and drop an image to simulate it.
- In Color Mode: pick a color or enter a hex code.
- View all 6 vision type simulations simultaneously.
FAQ
What is deuteranopia?▾
Deuteranopia is red-green color blindness caused by absent green cone cells — the most common form, affecting ~6% of males.
How should I design for color blindness?▾
Don't rely on color alone to convey information. Use patterns, labels, and sufficient contrast to ensure content is accessible to all users.
Color Blindness Statistics
- ~8% of males have some form of color blindness.
- Deuteranopia/anomaly is the most common type.
- Achromatopsia (total color blindness) affects ~1 in 30,000.
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