You'd want something with a taller back. Don't overdo it. With just a few select pieces you can change the look of the room. Antique tables look good with sofas that have simple lines, and oriental rugs go well with Scandinavian furniture. There's always a color or line or feeling that can be carried out.
Contemporary furniture works beautifully with oriental, African and Malaysian furniture.
Decide what type of contemporary look you like, a style that is more stark or more rustic. A lot of people, for example, like to mix a country French armoire with contemporary upholstery. Use contemporary fabric on traditional furniture. Use contemporary art, crafts and accessories. Abstract art in a traditional room helps it get away from a stiff look.