Perceivable / 1.4 Distinguishable

1.4.13Content on Hover or Focus

Level AA

Additional content triggered by hover or focus (e.g. tooltips) must be dismissible, hoverable, and persistent until the user acts.

Normative References

Success Criterion 1.4.13 Content on Hover or Focus — WCAG 2.2(opens in a new tab)The normative requirement text.
Understanding Content on Hover or Focus — W3C(opens in a new tab)Official guidance on intent, examples, and techniques.