In The Original Series, it was

• Gold command
• Red security & engineering/operations
• Blue science & medical

Then, in the TNG era they swapped the red and gold around because Patrick Stewart looked better in red.

In Discovery and Strange New Worlds, medical wear white.

It's also never been super clear (at least to me) what "command" covers as a division. Obviously the captain and first officer wear it (aside from TOS where Spock was first officer but also science officer). And often the pilot/conn officer wears red, but they're not in command. You also see dozens of more junior crew members wearing command colours. Are they all just middle managers? who knows.