Complementary Schemes. Rules of attraction.
Colors found on opposite sides of the color wheel tend to enhance each other's intensity. See how the cool hue of the dusty blue walls enhances the warmth of the yellow and orange hues found in the throw pillows and the painting? A sense of ease permeates this space creating a perfect environment for cuddling on the couch or lingering over brandies.
Hint: Consider using a single color on your walls and then add pizzazz with accessories like cushions, flowers, vases and lamps. In complementary colors of course!