What is an acceptable contrast ratio between a foreground and its background?

  • Is this question about websites or printed materials or just generally? I suspect the answer varies by the type of design. Commented Jan 4, 2011 at 21:35
  • In what context? It's all about context.
    – DA01
    Commented Jan 25, 2012 at 23:05

1 Answer 1


If this is for web, I typically use Jonathan Snook's Color Contrast Checker. The safe ratio is about 7.5

Roger Johansson has a nice blog post about varies contrast checking tool, check it out.

  • Not that that is specific to text/background color contrast.
    – DA01
    Commented Jan 25, 2012 at 23:06

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