I would also find such a tool useful, but names like “Watermelon Sugar”, “Tidal”, or “Singapore Orchid” don’t really help me at all. Just tell me something like “dark brown”, “pale green”, “hot pink”, “tan”, etc.

Yeah I agree. Maybe useful if it wasn't nonsense paint colour names.

If you scroll down a bit, you will see that the api provides all kind of lists, there are plenty that are more descriptive or simpler depending on what you are going for.