Depending on how much color you like....how about a pretty coral?

http://housepaintcolors.net/benjamin-moore-orange-house-paint-colors-palette-03/

What color is the room directly outside this room?

Benjamin Moore Gray Owl or Classic Gray. You dont seem to say or show the floor tile

Here are up close pictures of the floor time and the vanity

No, that one is way too bright.

The Coral Buff, above, would be very pretty. or Coral Gables or Chit Chat if you want brighter. Both go nicely w/the gray. Don't paint the walls gray!! If you don't do the coral, then the light blue is nice. also, look at BM Sea Salt.. It's a grayish/green

Keep the colors soft and light, which will look much more sophisticated than the bright ones.

I have tried a bath in the coral, to peach tones but found difficult to coordinate accessories and linens other than white, or go to the Florida beachy theme. Also, how does your skin look in these tones? Corals can flatter most complexions, some skin tones can take on a greenish tinge with green tones. That is one reason greys have become so popular. Something to think about

buy your towels, rug, art and work back from there for the wall color.