Chart Palette Contrast Checker
Check every series colour against the chart background, compare adjacent series, and repair failures while preserving hue and saturation where possible.
No account. Nothing stored. Runs in-process with WCAG arithmetic — no AI model call.
Add your chart palette
Use 2–10 series colours. Six common chart colours are loaded as a starting point.
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Apply the palette across every future visual
The checker stays free. Gixo Prism lets you save the result as a brand kit and apply it across charts, diagrams, cards, and visual packs.
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