Colorblind Simulator
Upload a game screenshot to see a simulation of how it looks for different types of color vision deficiency. Useful for checking UI and effect colors.
Check an Image
Upload an image to see a simulation for the selected type.
What is the Colorblind Simulator?
Upload a game screenshot and see, right in your browser, how it looks under different types of color vision deficiency. Check your UI and effect colors from the perspective of players with different color vision.
How to Use
- Drag and drop the game screenshot you want to check, or click to select one.
- Choose the color vision type you want to simulate.
- Compare the original and simulated images side by side.
- Download the simulated image if you need it.
Example
Upload a UI with red and green HP/MP bars side by side, select "Deuteranopia," and you'll see how hard it can be to tell the two colors apart.
Using This in Game Development
Check during development whether UI elements that rely on color alone — HP bars, minimap icons, quest markers — are still distinguishable for players with color vision deficiencies. It's also a good way to decide where you need shapes or icons in addition to color.
Notes
This simulation uses a simplified approximation algorithm. Actual perception varies between individuals, and this tool doesn't guarantee medical accuracy or serve as a diagnosis. Use it as a general accessibility guideline.
FAQ
What color vision types are supported?
Protanopia (red-blind), deuteranopia (green-blind), tritanopia (blue-blind), and achromatopsia (monochrome).
Is my image uploaded to a server?
No. All image processing happens in your browser, and the image you upload is never sent to a server.
Is this simulation medically accurate?
No. It's a simplified approximation and shouldn't be used for diagnostic purposes.
Related tools: Color Palette Extractor, Pixel Art Converter