I have a bright kinda dark blue painted room, what color carpet should i have with it?

With dark blue walls, I'd consider a neutral toned carpet. Creams, beiges, or taupes will not conflict with wooden furniture. If anything, they would accent it.

To liven up a neutral carpet, I'd add an area rug that complements your furniture and wall color. With dark blue, you could add a rug like this blue and silver rug, and use the accent colors for your room decor.