Right now I'm really loving white, navy and teal together.
I sell a fair amount of navy, white and chartreuse. It seems to be making a rise in popularity.
I heard from somewhere that the "IT" color for the year is supposedly emerald green.
I've seen a fair amount of navy/white/coral, grey/aqua, grey/yellow, grey/almost anything really!! Grey is the "IT" color for neutral right now, particularly grey chevron. (and grey stripe) It would seem that you can't go wrong with grey + another color (yellow, aqua, turquoise, navy, orange, etc)