Color Blindness Simulator
About Color Blindness Simulator
Upload an image or enter colors to see how they appear with different types of color blindness: protanopia, deuteranopia, tritanopia, and more.
How To Use
- Pick or enter your colors — hex, RGB, or HSL depending on the tool.
- Read the computed result: contrast ratio, palette, converted value, or simulated output.
- Copy the value, or adjust the inputs to test another combination.
Example
Input: A foreground and background hex value, or an uploaded image.
Output: A contrast ratio, a palette of swatches, or a converted color value you can copy.
Who Uses Color Blindness Simulator
- Designers checking accessibility and building palettes privately.
- Anyone who needs instant, no-upload color tools.
- Teams that want private — files and text stay on your device and are never uploaded to a server for design work.
Frequently Asked Questions
Is Color Blindness Simulator free to use?
Yes — it's 100% free and runs directly in your browser with no signup, no watermark, and no limits.
Is my data uploaded anywhere?
No. All processing happens locally on your device. Nothing you enter is ever sent to a server.
Can Color Blindness Simulator help me meet accessibility standards?
Yes. The color tools report the exact WCAG ratios and thresholds you need to design accessible, color-contrast-compliant interfaces.
Which browsers are supported?
Any modern browser — Chrome, Firefox, Safari, or Edge — on desktop or mobile. JavaScript needs to be enabled.