What types of color blindness does this tool simulate?

Deuteranopia (green-blind, ~6% of men), protanopia (red-blind, ~2% of men), and tritanopia (blue-blind, very rare). Combined, about 8% of men and 0.5% of women have some form of color vision deficiency.

Is my image uploaded anywhere?

No. The simulator applies color matrix transforms entirely inside your browser using the Canvas API. Your images never leave your device.

Does it work on mobile?

Yes. The tool works in Safari and Chrome on iOS and Android. Use the file picker to select an image from your camera roll.

Color Blind Simulator — See Designs Through Color-Blind Eyes

Color Blind Simulator

Upload an image to see how it appears with deuteranopia, protanopia, or tritanopia color vision deficiency.

100% client-side · no upload

Upload Image

Upload an image to see the simulation

How to use the color blind simulator

Click Upload Image and select any image from your device.
Choose a color vision deficiency type from the dropdown.
Compare the original and simulated views side by side.

Common use cases

UI/UX review: Screenshot your app and check if color-only cues are still readable.
Data visualization: Verify chart colors are distinguishable for all users.
Marketing materials: Ensure brand colors work for color-blind customers.

常见问题

What types of color blindness does this tool simulate?: Deuteranopia (green-blind, ~6% of men), protanopia (red-blind, ~2% of men), and tritanopia (blue-blind, very rare). Combined, about 8% of men and 0.5% of women have some form of color vision deficiency.
Is my image uploaded anywhere?: No. The simulator applies color matrix transforms entirely inside your browser using the Canvas API. Your images never leave your device.
Does it work on mobile?: Yes. The tool works in Safari and Chrome on iOS and Android. Use the file picker to select an image from your camera roll.