Color Blindness Simulator help

Color Blindness Simulator applies a color vision deficiency model to an image so you can check whether a design still reads for people who see color differently.

Steps

  1. Drop in an image or pick a sample.
  2. Choose a deficiency type and strength.
  3. Compare the original and the simulation with the slider.

Common questions

Which types are covered?

Protanopia, deuteranopia, and tritanopia, their milder anomalous forms, and full achromatopsia.

How accurate is it?

It uses a widely cited linear model. It is a good guide for design review, not a clinical test.

Can I save the simulated image?

Yes. The compare view has a Save PNG option for the current result.

Is the image uploaded?

No. It is processed on a canvas in your browser.

Everything runs in your browser. Nothing you enter or drop is uploaded.

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