H.M.
Hi D.,
Navy blue looks great with tan. I coordinated my living room and foyer & dinning room (greatroom) with tan and navy and I get so many complements! I am not afraid of color and I do not have 1 white wall in my home. Red would also look nice together. To really give you space a look take one of those colors and paint the walls. So many people are afraid of color...when really you only spending $30 and you can change it as many times as you want! Since you have kids..washable paint is wonderful! Hope this helps.