Please clarify: Are you asking about towels, art, or paint?

If you like neutrals keep in neutral! :) you can do beige

Inspiration

I’m looking for advice on towels, art and rugs. I’m keeping the walls white.

I like the idea of of a blush pink to accent your current bathroom.

Madison Park Signature 800GSM Antibacterial 8-Piece Bathroom Towel Set, Pink · More Info

Mohawk Home Classic Cotton Ii Blush 1' 9" x 2' 10" Bath Mat · More Info

I'd also think about changing out your faucets and cabinet hardware to a satin brass.

Avoid expensive art in shower room, oil paint and paper backing can
mildew fast. Art without glass protection that is hung over toilet can be hard to clean off airborne getms from flushes. Pick your art first, then choose towels and accessories from the colors in art. You can change the towels color seasonally.

You have as lot of black going on. I think switching out your light fixtures with polished nickel fixtures would add warmth and brightness to your room.

I like bath bar lighting not a fixture with exposed bulbs as for accent colorwhat colors do you like since really any color will work. Not a big lover of girly pink in a shared bathroom