With a low pile neutral color carpet the area rug functions the same way it would on non-carpeted floors. Sign In For Price Starting at 4499 15 - 40 OFF Reflection Area Rug or Runner GrayBlue Easy-Care. Geometric Outdoor Carpeting Lattice Circles Pattern With Intertwined Oval Shapes Traditional Japanese Area R Rugs On Carpet Vintage Carpet Baby Nursery Themes Adding color and defining the space. Area Rug on Carpet Model . For an area rug to look balanced under a bed it should be large enough to extend beyond the sides of the bed at least 18 inches for a king or queen bed and at least 12 inches for a full or twin bed. I have always had an area rug on my carpet. A traditional red rug paired with this dark carpet brings the room to life. Before buying an area rug it is important to consider what the rug will be used for. You may be laying down an area rug because you cant stand the color of the existing wall-to-wall carpet such as in a rental unit but trust us it will look mu...