Chevron element.

Non-text content- it should have an accessible name by providing a descriptive alt text. Non-text contrast- It should have a sufficient contrast ratio of 3:1 color contrast ratio.

Ensure the chevron has a text alternative if it is meaningful, and has sufficient color contrast(non-text contrast).

The key WCAG criteria would include the following:

When used adjacent to and part of visible Labels they should be hidden from screen reader users to avoid confusion caused by redundant information (Non-text content).

Non-text contrast: Chevrons indicating navigation should be easily visible to all users, as they play a crucial role in guiding users through the interface.

Focus Order in Accordions: In the case of accordions, chevrons should receive focus as one element along with the accordion headers, ensuring users can navigate through the page logically.