Support Low Vision

#a11y logo for Accessibility

WCAG 2.0

Web Content Accessibility Guidelines (WCAG) 2.0 provide development techniques and tests for supporting low vision users. (


  • Do not use color as the only means to convey information.
  • Ensure sufficient contrast between foreground and background colors.
  • Avoid using images of text.
  • Ensure application supports zooming up to 200%.
  • Support high contrast themes:
    • Avoid background images – Or –
    • Generate a utility class to test for high contrast and provide different styling when background images are disabled.
  • Provide highly visible focus indicators


  • Set High Contrast Theme in Windows. Windows Key + U, Ease of Access Center, Make Computer Easier to See.



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