Color Tools•Free Online Tool
Color Blindness Simulator for Images
Test your graphics, websites, and data visualizations for color accessibility (WCAG 2.1 compliance). Uses real-time in-browser LMS color matrix math to simulate red-blind, green-blind, blue-blind, and complete achromatopsia color vision deficiencies.
100% Free & Private
How to Use Color Blindness Simulator for Images
1
Upload Graphic
Upload your image or UI design.
2
Select Deficiency
Pick Deuteranopia, Protanopia, Tritanopia, or Achromatopsia.
3
Inspect Contrast
Ensure key information and buttons remain legible.
Frequently Asked Questions
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