There's a list of colours people typically use, too![0]
I personally use #3882cc. Played around with lots of different colours and that's the one I ended up on. After finding [0] not too long ago, I tried some other colours and ended up going back to this one. They just looked alien to me since I've had this one for what feels like forever.
I've been using #F6F60 for a while now, since it makes the top bar the same color as the background. It is only a problem when you are on a page like /newest where the text in the navigation bar at the top of the current page turns white ("new" in this case) to indicate that you are not on the homepage. The lack of contrast makes it almost impossible to read.
I personally use #3882cc. Played around with lots of different colours and that's the one I ended up on. After finding [0] not too long ago, I tried some other colours and ended up going back to this one. They just looked alien to me since I've had this one for what feels like forever.
[0]: https://news.ycombinator.com/topcolors