Description

When you type @ in the editor, a list of users is shown.
The list shows the avatar, the chosen display name from the user profile, and the user's slug.
The text for the slug has too low contrast on the item in the list that is selected.
It is #757575 on #007cba (contrast ratio 1:1) and hover it is #007cba on #006ba1 (1.26:1).
#007cba and #006ba1 are from the admin theme.

Step-by-step reproduction instructions

Type @ in the editor and select a user. Try to read the slug, which is the second name on the listed item.

Screenshots, screen recording, code snippet

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure