Red-blind (L-cone deficiency)
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Supports PNG, JPG, GIF
Color Palette Comparison
👁️ What is Color Blindness Simulator?
Color Blindness Simulator is an accessibility tool that shows how people with color vision deficiency perceive images. It supports major types including Protanopia (red-blind), Deuteranopia (green-blind), Tritanopia (blue-blind), and Achromatopsia (total color blindness). Compare both uploaded images and color palettes in real-time, making design reviews easy. About 8% of males and 0.5% of females worldwide have color vision deficiency, making accessibility consideration essential.
📊 Color Vision Deficiency Types
| Type | Affected Colors | Prevalence |
|---|---|---|
| Protanopia | Red-green confusion | 1% male, 0.01% female |
| Deuteranopia | Red-green confusion | 5% male, 0.4% female |
| Tritanopia | Blue-yellow confusion | Very rare (0.01%) |
| Achromatopsia | All colors (grayscale only) | Extremely rare (0.003%) |
💡 Accessible Design Tips
- Avoid color-only cues: Use icons, patterns, and text labels together
- Sufficient contrast: Ensure brightness difference between foreground and background
- Safe color combinations: Use blue-orange instead of red-green
- Charts and graphs: Include patterns or markers beyond color
- Error indicators: Provide multiple cues with red + icon + text
Frequently Asked Questions
Is the simulation identical to actual color blindness?▼
The simulation is based on scientific models, but color vision deficiency varies between individuals. Use it to understand general trends, and actual user testing is recommended.
Which type should I check first?▼
Red-green color blindness (Deuteranopia + Protanopia) is most common, so check these two types first. Over 99% of all color blind people have red-green deficiency.
Are my images sent to a server?▼
No, all image processing is done locally in your browser. For privacy protection, images are never uploaded anywhere.
What is Color Blind Simulator?
Simulate how colors and images appear to people with different types of color blindness: protanopia, deuteranopia, tritanopia, and achromatopsia. Essential for accessible design.