Color-Blind Safe Data Visualization: Palettes and Patterns
Design color-blind safe data visualizations. Use tested palettes, patterns, and labels to ensure your charts are readable by all users.
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Tags: color, accessibility, data-visualization
Color-Blind Safe Data Visualization: Palettes and Patterns Approximately 8% of men and 0.5% of women have some form of color vision deficiency. In a company of 200 people, that's 8–16 people who cannot read charts that rely solely on red-green contrast. In public-facing visualizations — journalism, public health, government data — the scale is much larger. Designing for color-blind users is not a niche accessibility concern. It's a basic standard for professional data work. This guide covers the types of color blindness, how to test your charts, and which palettes are safe. --- Types of Color Vision Deficiency Color blindness is not binary. There are several distinct types with different affected spectra: Deuteranopia and Deuteranomaly (Most Common) Deuteranopia: Complete absence of green…
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