Color Blindness Simulator
Simulate how images appear to colorblind users. Supports 4 types: Protanopia, Deuteranopia, Tritanopia, and Achromatopsia.
Click or drag image to upload
Supports PNG, JPG, WebP
Select Color Blindness Type
• Simulates how people with color blindness see images
• Use for accessibility testing in web/app design
• Images are processed locally and never sent to any server
👁️ What Is a Color Blindness Simulator?
A color blindness simulator shows how people with color vision deficiency perceive images and designs. It is an essential accessibility tool for web designers, app developers, and graphic designers to ensure that content is readable and usable by everyone, regardless of their color vision.
🔬 Types of Color Blindness
Red-Green Color Blindness (Most Common)
Affects about 8% of males and 0.5% of females worldwide. It makes it difficult to distinguish between red and green colors. Includes Protanopia (red-blind) and Deuteranopia (green-blind).
Blue-Yellow Color Blindness
Also known as Tritanopia, this type makes it hard to tell blue and yellow apart. It is less common than red-green color blindness.
Complete Color Blindness
A very rare condition where no colors can be perceived at all. Everything appears in shades of gray (Achromatopsia).
🎨 Accessible Design Tips
- Never rely on color alone to convey information. Use patterns, icons, or text labels
- Use blue-orange combinations instead of red-green for better distinction
- Add visual cues like dashed lines or markers in charts and graphs
- Ensure sufficient contrast ratio (WCAG recommends 4.5:1 minimum)
Frequently Asked Questions
How common is color blindness?▼
About 8% of males (1 in 12) and 0.5% of females (1 in 200) worldwide have some form of color vision deficiency. Red-green color blindness is the most prevalent type.
Can this simulator diagnose color blindness?▼
No, this tool simulates how color-blind individuals see images. For diagnosis, please consult an eye doctor who can perform tests like the Ishihara color test.
Are my uploaded images safe?▼
Yes, all image processing is done locally in your browser. No images are uploaded to any server, ensuring complete privacy.