Juicy Studio: Luminosity Contrast Ratio Analyser - The Diigo Meta page

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  • • Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least 3:1;
     
    • Incidental: Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement.
     
    • Logotypes: Text that is part of a logo or brand name has no minimum contrast requirement.
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• 08 Jan 12
  

  Daniel Dittmar

  This tool allows you to input the hexadecimal color codes of your foreground and background color, then runs a luminosity contrast algorithm recommended in the Web Content Accessibility Guidelines 2.0 from the W3C. This simple tool saves you from having to pull out a calculator and trying to remember the math lessons you had in high school.

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  Great tool to see whether a proposed design has enough contrast for legibility

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  - -

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  Cat McD

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  Compare luminosity for foreground and background.

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Page Comments

• 
  Lindsay Donaghe on 2006-08-23
  A tool for checking luminosity contrast ratio for usability purposes. Supposedly the newer way to figure out whether your design is contrasty enough.

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