Principle 1 – Perceivable

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Conformance Levels


Information and user interface components must be presentable to users in ways they can perceive.

Questions & Answers

When can text links have 3:1 color contrast?

Some sites say link text color contrast should be 4.5:1, and some sites say link text color contrast should be 3:1. When is 3:1 color contrast sufficient for link text?

  • contrast ratios
  • links
  • text

Does an element’s hover state have to reach 3:1 contrast ratio?

I have a dropdown list with black text in a form. Does the background bar on the hover states as you hover over each selection option require a 3.1 contrast ratio against the white container background, or can I use a light gray background bar...

  • contrast
  • hover state