Text Styles:

Use underlining only for hyperlinks to assist people who are color blind in differentiating them from regular text. Similarly, avoid using text color and highlighting alone for emphasis as they may be challenging to distinguish. Some screen readers do not announce bold or italicized text, so refrain from using text styles alone to create meaning.

Don’t use underlining, highlighting, or text color alone to denote emphasis or create meaning.

Do use bold or italic styling sparingly to emphasize words or short phrases within the body of a text. To call attention to an entire sentence or section, consider writing “Important” before the content.

Check out this short tip about using both visual and non-visual methods to emphasize content from Deque University.