Large-scale text (18pt or larger, or 14pt bold or larger) meets a contrast ratio of at least 3:1 against its background.
Insufficient contrast ratio for header:
This large-scale h3 element has an insufficient contrast ratio (1.69:1) against its background:
Note: Possible to automatically test. This violation can be detected by querying all text elements (e.g., paragraphs, italics), programmatically retrieving their color attributes (e.g., from the CSS stylesheet), along with the background-color attributes of their background elements, and verifying that an appropriate contrast ratio exists between them.