See any image the way
colour-blind people do, then fix it
About 1 in 12 men and 1 in 200 women are colour-blind. Upload a chart, map, slide or photo: Sparkle shows what they see, tells you what gets lost, and gives you a version that works for everyone.
Made for two kinds of people
If you're colour-blind
- Read charts, maps and status colours that normally look the same
- Get a version with patterns, outlines and icons where colours clash
- Ask Sparkle AI: "Which line is revenue?"
If you design or publish
- See your work through the eyes of around 300 million colour-blind people
- Get a plain verdict: fine, some problems, or serious problems
- Avoid relying on colour alone (accessibility rule WCAG 1.4.1)
How it works
Upload
Any JPG or PNG. It's processed in memory and never stored.
See what they see
Your image as someone with colour blindness sees it, side by side with the original, plus a plain-language verdict.
Get a version for everyone
Sparkle adds patterns, outlines and icons wherever colours would be confused. Download it, or ask the AI what anything means.
Sparkle for teams
Sparkle is free for individuals, always. For companies, we're building accessibility reports you can share, checks for whole design systems, an API, and scan history. That helps you meet the European Accessibility Act and WCAG.
Curious about your own colour vision?
Pick the number you see in each plate. This is a quick, informal check, not a medical test. If you're unsure about your colour vision, see an optician.
Plate 1
Plate 2
