Color Blindness Simulator
Simulate Protanopia, Deuteranopia, and Tritanopia color blindness accessibility.
Color Blindness Accessibility Simulator
About Color Blindness Simulator
The Color Vision Deficiency (CVD) & Accessibility Simulator renders live side-by-side simulations of Protanopia (red-blind), Deuteranopia (green-blind), Tritanopia (blue-blind), Achromatopsia (monochromacy), and Protanomaly on any color swatch or uploaded UI screenshot.
How to Use Color Blindness Simulator
Step 1
Enter a color code or upload a design screenshot.
Step 2
Select vision deficiency type from the dropdown tabs.
Step 3
Compare original vs simulated rendering side-by-side.
Step 4
Ensure essential status information does not rely solely on color.
Practical Use Cases for Color Blindness Simulator
WCAG 2.1 Color Accessibility Auditing
Verify that chart legends, error states (red vs green), and status badges remain clearly distinguishable for color-blind users.
UI Screenshot Accessibility Testing
Upload full web page screenshots to preview exactly how color-blind visitors perceive your product design.
Input & Output Examples
Simulating Red/Green Warning Buttons (#EF4444 vs #10B981)
Colors: Red (#EF4444) and Green (#10B981), Deficiency: Deuteranopia
Deuteranopia Preview: Red becomes Brownish-Yellow (#967E3F), Green becomes Mustard-Yellow (#9F8548) | Status: Low Distinguishability Warning
Key Features & Performance
- ✓Simulates 8 vision conditions: Protanopia, Protanomaly, Deuteranopia, Deuteranomaly, Tritanopia, Tritanomaly, Achromatopsia, Achromatomaly.
- ✓Supports single color swatches, multi-color palettes, and full uploaded image screenshots.
- ✓Uses scientifically calibrated Brettel-Viénot-Mollon and Machado color deficiency transformation matrices.
- ✓100% Client-Side GPU/Canvas execution.
- ✓1-Click Copy simulated color values.
Key Terminology & Definitions
Deuteranopia (Green-Blindness)
The most common form of red-green color blindness (affecting ~6% of males), caused by the complete absence of green retinal photoreceptors.
Machado CVD Simulation Algorithm
A physiologically accurate matrix transformation algorithm that simulates both anomalous trichromacy and dichromacy in LMS cone color space.