Coordinate your blue with chocolate and light brown. Consider furniture with clean, modern lines in natural dark stains. Chrome accessories also look great with these colors.
Adding white window covering and linens will make the room look clean and crisp. A soft yellow wll warm it up. Red and navy will make it more masculine.
If you want the room to have a cool feel then using white furniture, white curtains, white bedding would look crisp and clean. For a warm look, brown compliments blue and has been two popular colors lately. Bedding can be brown accenting it with blue sheets and complimentary decorative pillows. Either would be a great look.
Robin's egg blue is a lovely color. For a sophisticated look, use creamy white linens, draperies that match the blue of the walls, and chocolate brown accents. A small piece of silk damask in blue and chocolate can be used to sew accent pillows for low-cost but expensive look.