Which color blindness types can be simulated?
The tool can simulate common modes such as protanopia, deuteranopia, tritanopia and grayscale-style previews.
Color
Color Blindness Simulator
Simulate color blindness online for images and color palettes. Preview protanopia, deuteranopia, tritanopia and grayscale-style vision modes in your browser.
Tool
Color Blindness Simulator
Simulate color blindness online for images and color palettes. Preview protanopia, deuteranopia, tritanopia and grayscale-style vision modes in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free color blindness simulator to preview how an uploaded image or color palette may appear to users with different types of color vision deficiency. Compare normal vision with protanopia, deuteranopia, tritanopia and low-saturation previews directly in your browser.
Examples
- Upload a UI screenshot
- Upload a chart image
- Upload a logo design
- #ef4444, #22c55e, #3b82f6
Frequently Asked Questions
Are the simulations medically exact?
No, simulations are approximations. They are useful for design checks, but they do not represent every individual experience perfectly.
Do uploaded images leave my browser?
No, image processing should run locally in your browser. Uploaded images are not sent to a server.
Why should I test designs for color blindness?
Testing helps avoid relying on color alone and can reveal charts, buttons or status indicators that are hard to distinguish.