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Audit Charts and Graphs for Color Blindness

Test data visualizations to ensure they're understandable for the ~8% of men with color vision deficiency.

Níl gá le logáil isteachFanann comhaid príobháideach

Buail comhaid anseo, nó cliceáil chun brabhsáil

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Brabhsáil comhaid

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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.

Data Viz tips

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Red/green is the most common CVD-failing combination in charts. Try your chart in deuteranopia mode — if red and green lines are indistinguishable, you have a problem.

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Fix: use color + shape + pattern. Add markers (circles vs squares), line styles (solid vs dashed), or direct labels.

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Modern chart libraries (D3, Chart.js, Recharts) have CVD-safe palettes — viridis, cividis, magma. Use those instead of red/green.

Conas a Oibríonn sé

1
Roghnaigh Comhad
Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.
2
Próiseas
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Íosluchtaigh
Get your result instantly. Nothing is stored after you leave the page — complete privacy.

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