have that wrapped in a component named ErrorText and it makes perfectly sense. Why would you need a component ErrorText which restates its own name in the classname again when that classname is only ever used in that exact component. If anything you only need it because your atomic styles sit in another file and you somehow need to reference them. If you have both in the same file with a name ErrorText there is nothing more to give any semantic meaning.

Semantic class names make no sense in a component context and that's why tailwind feels like a liberation in the context of component-based web applications. A component and its interface is the semantic meaning, the markup and styles it contains are scoped to that component and should not be / need not be semantic at all. This greatly reduces cognitive load.