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Color Blindness Simulator
Upload an image and preview how it appears with protanopia, deuteranopia, or tritanopia filters to improve accessible design decisions and color choices.
How to use this tool
- Upload or drag-drop an image into the simulator.
- Switch between vision modes like protanopia, deuteranopia, and tritanopia.
- Download simulated output images for reviews and accessibility documentation.
Design review usage
- Evaluate UI graphics for color-dependent information loss.
- Validate chart legends, status colors, and icon contrast choices.
- Use outputs in design QA checklists and stakeholder walkthroughs.
Accessibility guidance
- Do not rely on color alone to convey state or severity.
- Add labels, patterns, or icons to reinforce meaning.
- Test multiple deficiency modes for broader coverage.
FAQ
- Which simulation modes are included?
- Normal view plus protanopia, deuteranopia, tritanopia, and achromatopsia.
- Can I export the simulated image?
- Yes. Use the download button after selecting a mode.
- Does the image leave my browser?
- No. Simulation runs locally in-session.
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