vamseeachanta Color Blindness (+3)
Color Blindness
- Never rely on color alone to distinguish data series
- Add pattern fills, different line styles (solid, dashed, dotted), or direct labels
- Test with a colorblind simulator (e.g., Coblis, Sim Daltonism)
- Use the colorblind-friendly palette:
sns.color_palette("colorblind")
Screen Readers
- Include alt text describing the chart's key finding
- Provide a data table alternative alongside the visualization
- Use semantic titles and labels
General Accessibility
- Sufficient contrast between data elements and background
- Text size minimum 10pt for labels, 12pt for titles
- Avoid conveying information only through spatial position (add labels)
- Consider printing: does the chart work in black and white?
Accessibility Checklist
Before sharing a visualization:
- Chart works without color (patterns, labels, or line styles differentiate series)
- Text is readable at standard zoom level
- Title describes the insight, not just the data
- Axes are labeled with units
- Legend is clear and positioned without obscuring data
- Data source and date range are noted