Color Contrast-2
Checking color contrast in Acrobat Pro
Color contrast is one of the accessibility issues that Acrobat Pro is unable to help with, beyond simply reminding us to check it.
There are a variety of tools available to help with checking color contrast. You are encouraged to find one that you like and use it as part of your standard workflow.
The Paciello Group has provided a free color contrast checking tool that can be installed on your local machine and used to test the color contrast of anything you can see on the computer monitor. Download Paciello Colour Contrast Analyzer. Links to an external site.
Need to change the text font or background color in Adobe Acrobat DC?
When this check fails, it's possible that the document contains content that isn't accessible to people who are colorblind. To fix this issue, make sure that the document's content adheres to the guidelines outlined in WCAG.
1 Choose Edit > Preferences (Windows) or Acrobat > Preferences (Mac OS).
2 Click Accessibility.
3 Select Replace Document Colors. Choose the color combination that you
want from the drop-down list, then click OK. Typically, a white background with black text will suffice for color contrast.
Our standard for accessible color contrast
WCAG 2.0 success criteria 1.4.3 (AA) requires a color contrast ratio of 4.5:1 for all text, with the following exceptions:
- Large Text: Large-scale text and images of large-scale text should have a contrast ratio of at least 3:1.
- Incidental: Text or images of text that are part of an active user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains other significant visual content, have no contrast requirement.
- Logotypes: Text that is part of a logo or brand name has no minimum contrast requirement.