What’s Inside

A one-page checklist covering the essentials of accessible color use in data visualization:

  • Contrast ratios — WCAG-compliant thresholds for text and graphical elements
  • Color blindness simulation — Quick tests before publishing
  • Redundant encoding — Using shape, pattern, or labels alongside color
  • Common pitfalls — Red/green palettes, low-contrast legends, gradient traps

Cognitive Principle

Perception & Visual Processing — Color discrimination varies significantly across individuals. What looks obviously distinct to you may be indistinguishable to 8% of your male audience. This checklist ensures your visual hierarchy survives varied color perception.

When to Use

Run through this checklist before publishing any dashboard, report, or presentation that relies on color to convey meaning.

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