Thinking of the beach and the cool ocean colors and textures you come across. Little pops of red make the room seem classic and not too overpowering with the blue. A reclaimed wood headboard reminds me of the driftwood you come across on the beach and copies the color of the side table. The side table is reminiscent of picnics on the beach and doubles for storage. The artwork and pillows clearly show the ocean vibe in the room.
It is pastels without being childish.
Here's one way to decorate a bedroom in pastels