Accessibility in Data Viz

Summary

Making charts usable for colorblind viewers (via palette and pattern, not color alone) and screen-reader users (via alt text and data tables) — often skipped, increasingly expected.

• 1Add text labels or patterns to a chart so it doesn't rely on color alone.
• 2Write alt text for a chart as if describing it to someone who can't see it.
• 3Learn why relying solely on a red/green color contrast excludes many viewers.