Color Blindness Simulator

Simulate color blindness online free — preview protanopia, deuteranopia and tritanopia. Test web accessibility for all users. Browser-based.

Free online color blindness simulator showing how images and colors appear to people with various types of color vision deficiency. All processing in your browser — no files uploaded. Essential for accessibility design testing and UI/UX validation.

Drag & drop or click to upload an image
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How to use Color Blindness Simulator?

  1. Upload an image or enter colors.
  2. Select the color vision deficiency type to simulate.
  3. Review the result to verify accessibility.

Frequently asked questions about Color Blindness Simulator

What types of color blindness can be simulated?

Protanopia, deuteranopia, tritanopia, achromatopsia, and their partial variants (protanomaly, deuteranomaly, tritanomaly).

Can I simulate entire images?

Yes, upload an image and it will be fully transformed to show how it appears under the selected color vision type.

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