The sizes that are used for the living room are 4X6 feet and 6X9 feet. Larger living rooms should have more than one piece on the flooring. You can also use smaller ones to place by the fireplace preferably in front. In order to promote unity and harmony to the living room use similar colors and styles.
Instead balance it out with a mix of rich and subtle neutral shades of color with perhaps just one or two pops of color in the rest of your furniture such as a sunny yellow sofa or a few colorful ornaments on your oak bookshelf.
If you are working with a large space and want to create different areas segment the room by using lounges and other large pieces of furniture as subtle divers.