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무료 Color Blindness Simulator
See how your design looks to people with color vision deficiencies. Simulates protanopia, deuteranopia, tritanopia, achromatopsia, and milder anomalies.
파일 크기 제한 없음파일이 비공개로 유지됨로그인 불필요영원히 무료
파일을 여기에 끌어다 놓거나 클릭하여 찾기
JPG, PNG, WebP 파일 크기 제한 없음
파일이 기기를 떠나지 않습니다. 모든 처리는 브라우저에서 로컬로 이루어집니다.
Upload a design, infographic, or photo to see how it appears to people with color vision deficiencies. Especially useful for: chart designers, UX designers, and accessibility audits.
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사용 방법
Color vision deficiency (CVD) is simulated using Brettel-Viénot color transformation matrices — the standard algorithm used in accessibility tools.
- 1You drop an imageThe image is loaded into a canvas in your browser. Pixels are downsized for performance (max 1200 px on the longest edge).
- 2A 3×3 color transform is applied to every pixelEach CVD type has a specific matrix. For deuteranopia (green-blind), red and green channels get mixed in a way that mimics what people with only L+S cones perceive.
- 3The transformed image displays alongside the originalSwitch between CVD types to see how the same image looks for the ~8% of men with some form of color vision deficiency.
Your image stays in your browser. Even the simulation math runs locally on your CPU — no server, no API, no upload.
왜 저희 도구인가요?
✓Completely free — no hidden costs, ever
✓No account, email, or login required
✓Files stay on your device — processing happens in your browser
✓Works on any device — phone, tablet, desktop
✓No watermarks on any output
✓Browser memory limits may apply for very large files
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