Semantic Classes

A semantic class is a preset composition of several color classes, handling dark mode and hover/active states automatically in accordance with Radix's design guidelines.

Below is a full reference of semantic classes, taking "red" color as example.

Semantic Class	Equivalent Color Classes
bg-red-app	bg-red-1 dark:bg-reddark-1
bg-red-subtle	bg-red-2 dark:bg-reddark-2
bg-red-ui	bg-red-3 dark:bg-reddark-3 hover:bg-red-4 dark:hover:bg-reddark-4 active:bg-red-5 dark:active:bg-reddark-5
bg-red-ghost	bg-transparent dark:bg-transparent hover:bg-red-3 dark:hover:bg-reddark-3 active:bg-red-4 dark:active:bg-reddark-4
bg-red-action (deprecated)	bg-red-4 dark:bg-reddark-4 hover:bg-red-5 dark:hover:bg-reddark-5 active:bg-red-6 dark:active:bg-reddark-6
bg-red-solid	bg-red-9 dark:bg-reddark-9 hover:bg-red-10 dark:hover:bg-reddark-10
border-red-dim	border-red-6 dark:border-reddark-6
border-red-normal	border-red-7 dark:border-reddark-7 hover:border-red-8 dark:hover:border-reddark-8
divide-red-dim	divide-red-6 dark:divide-reddark-6
divide-red-normal	divide-red-7 dark:divide-reddark-7 hover:divide-red-8 dark:hover:divide-reddark-8
text-red-dim	text-red-11 dark:text-reddark-11
text-red-normal	text-red-12 dark:text-reddark-12