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About Color Blindness Simulator (A11y)
The Color Blindness (CVD) Accessibility Simulator transforms hex colors and uploaded UI screenshots using Machado/Brettel matrix transformations to simulate Protanopia, Deuteranopia, Tritanopia, Protanomaly, Deuteranomaly, Tritanomaly, and Achromatopsia.
How to Use Color Blindness Simulator (A11y)
Step 1
Enter hex color codes or upload a UI design image.
Step 2
Select a color vision deficiency filter (Deuteranopia, Protanopia, Tritanopia, or Achromatopsia).
Step 3
Review simulated colors and verify visual distinction between UI elements.
Step 4
Click "Copy CVD Hex Values".
Practical Use Cases for Color Blindness Simulator (A11y)
Design System Palette Validation for Color Vision Deficiency (CVD)
Verify that chart palettes, alert badges (success green vs. error red), and syntax tokens remain distinguishable for color-blind users.
Data Visualization & Chart Accessibility Auditing
Simulate line charts, heatmaps, and financial graphs to prevent critical data loss caused by red-green color confusion.
Input & Output Examples
Simulating Red (`#E53E3E`) and Green (`#38A169`) in Deuteranopia
Primary Color: `#E53E3E` (Red), Secondary Color: `#38A169` (Green)
Deuteranopia: Red becomes `#8C7D42` (Olive Brown), Green becomes `#7E876B` (Brownish Gray) | CVD Contrast: `Indistinguishable (Needs Shape/Icon Indicator)`
Key Features & Performance
- ✓Comprehensive CVD Modes: Protanopia (no red cones), Deuteranopia (no green cones), Tritanopia (no blue cones), and Achromatopsia (monochromacy).
- ✓Machado 2009 Matrix Engine: physically accurate spectral cone response simulation algorithm.
- ✓Side-by-Side Dual Palette Viewer: compares standard trichromatic palette with simulated CVD palettes simultaneously.
- ✓100% Client-Side real-time color processing.
- ✓1-Click Copy CVD-adjusted hex codes.
Key Terminology & Definitions
Deuteranopia (Red-Green Color Blindness)
A hereditary color vision deficiency caused by the complete absence of green retinal photoreceptors, affecting approximately 6% of males.
Achromatopsia (Monochromacy)
A rare condition characterized by complete color blindness, where the visual spectrum is perceived entirely in shades of gray, white, and black.