Need to see more of the room.

I would choose at least one warm accent color to give live and complexity to your scheme. All-cool colors will create a flat, one-dimensional look. Try lemon, gold, terra cotta - they should all look good with the walls and furniture. Have paintings with warm and cool colors, pillows, area rugs, lamps, etc.

I'd keep the aqua but add perhaps navy and a pretty daffodil yellow. You can have more than one accent color; in fact, it's more interesting if you do.