Two of my favorite wall colors are the combination of dark blue and taupe.
I love their versatility with other colors and love the contrast of how they work together. My suggestion: paint an important, long wall in a room cobalt (such as Benjamin Moore’s Van Deusen Blue #HC-156) as an accent, and all the other walls of the room taupe (such as Benj. Moore Litchfield Gray # HC-78).
Gold tone pictures and mirrors look great and pop against the dark blue; so do blue and white porcelains of every variety. If you like that look, use vases or ginger jars in all sizes and shapes, and mix Oriental with contemporary. Cranberry, burgundy, and cherry reds work wonderfully against the blue.
Taupe is more interesting than plain beige because of the bit of gray in the tone, and crisp clean white paint for crown molding and baseboards frames out the colors and gives them definition. Plants with white planters, glass accessories, lots of mirrors in interesting frames, and dark well polished dark woods compliment the total picture. Floral patterned fabrics, toiles if you’re going traditional, ikats, geometrics, stripes and plaids, all work well with this color palette.
Although one doesn’t consciously count the number of patterns used in a given room, I usually try to use about 7 different patterns including tone on tones and textures. As long as the mix is well coordinated and patterns and colors relate to each other, it makes for interesting and well dressed rooms.