When there is insufficient contrast between the foreground text and the background, it can be difficult to read the text. Textual content should have high contrast ratios against their backgrounds in order to be legible to your readers. Contrast ratios can be checked using WebAIM's Contrast Checker. See More Information on the WCAG Guideline: 1.4.3 / 1.4.6 Contrast.
Insufficient Contrast Between Foreground Text and Background
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For Microsoft 365 users, highlight the segment of text that has the low-contrast issue.
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Change the font color of the text in the menu that is shown on top of the highlighted text, also accessible via the Home Font menus.
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Select a font color that pairs well with your background or highlight color.