The warm colors on the color wheel are red, orange and yellow. A color scheme that includes only warm colors is known as an analogous color scheme -- meaning, it is a color scheme made up of colors that are side by side on the color wheel. A warm color scheme is a daring choice in just about any room, but it can easily become overwhelming. Incorporate creams and whites in the room in order to balance the red, orange and yellow.
White and Black
A red sofa in a room of mostly black and white decor makes a strong impression. Add red accents elsewhere in the room so the sofa won't become the only focal point. Disperse red pillows and hang red curtains around the room to keep the flow of energy moving and to keep all eyes from landing on the sofa and staying there.
Khaki is a calming, soothing color. A color scheme of cream, khaki and tan will prevent your room from becoming too excitable or overwhelming. Again, use accents of red around the room to prevent the couch from being the single red piece in a room of soft neutrals. In this color scheme, a less vibrant red sofa -- perhaps one in a duller reddish-brown hue -- would work best.
A deer-brown or gray-brown color is appropriate for larger rooms where darker colors won't make the room claustrophobic. Paint the walls a darker brown and use other red pieces around the room. The accent color in this case would be a cream or even a bright white. This color scheme is best used in a room with tall ceilings and a lot of natural daylight.