Late 2230s
At this moment in history, whoever’s in Starfleet costuming just had a bunch of ideas they wanted throwing out, presumably much to the chagrin of the poor officers who had to update their wardrobes multiple times in the next few decades. First up, this retro throwback to the blue jumpsuits of the earliest days of Starfleet, this time in a two-piece uniform, but with a major change: division colors saw an overhaul in a similar vein to the uniforms immediately preceding this look. Gold became the color for Command, with metallic bronzes and silvers for Operations and Sciences, respectively.
https://gizmodo.com/star-trek-discoverys-must-watch-episodes-so-far-1843302538
