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免费 Color Blindness Simulator
See how your design looks to people with color vision deficiencies. Simulates protanopia, deuteranopia, tritanopia, achromatopsia, and milder anomalies.
无文件大小限制文件保持私密无需登录永久免费
将文件拖放到此处或点击浏览
JPG, PNG, WebP 无文件大小限制
你的文件永远不会离开你的设备。所有处理都在你的浏览器中本地进行。
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.
Optimize for your platform
工作原理
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.
为什么选择我们的？
✓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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