Module 1: Checkpoint 9—Link colours
| Conformance: Mandatory (Blue/purple colour desirable) |
Requirements
Links must be a different colour to non-linking text.
Links must have a minimum colour contrast ratio to the background of at least 4.5:1.
For consistency, it is recommended that agency sites use blue for unvisited links and purple for visited links.
Benefits of conformance
- Timely identification of links within a web page.
- Reduces cognitive load on users.
Risks of non-conformance
- Users should not have to guess or scrub the page to find out where they can click.