Stick with white walls and you can still have a dramatic burst of yellow without it keeping you up at night. A Greek key pattern in black lends further style to the space.
Here is another example of a navy blue and yellow color combination. A deep bold color sets off bright colors like a happy yellow. In a light bright space, a navy blue rug can ground the room creating a deep rich feel. You can find a rug with a blue and white pattern, or get a remnant rug in a solid navy blue.
I'm pretty sure I already have this in a book but as I'm perusing the articles about deep blues I'm again arrested by this gorgeous bedroom. I'm just now noticing the shape of the room, too cool. My ideal color scheme for everything in my head is cobalt and yellow, done deal.