- Consult a color chart. Blue is a cool-tone primary color. Color theory suggests complementing the blue sofa with red, orange or yellow accents.
- Add more blue. Add blue to the room if the sofa is the focal point of the room. Consider placing a printed throw blanket with the same shade of blue over an accompanying chair. Add an area rug that reflects the sofa's shade of blue.
- Accent the room. Accent the room with colors complementary to the blue sofa. Add an orange pillow to the sofa. Place a clear glass bowl of lemons and oranges on the coffee table. Hang paintings with scenes of blue sky and fall trees covered in leaves of oranges, reds and yellows.
- Think blue and neutrals. Consider forgoing color theory and use various shades of blue and neutrals to complement the blue sofa. Work with shades lighter, darker and similar to the blue sofa. Coordinate with ivory, white, black, tan and browns for a subdued decor.
- Decorate with the blue sofa as an accent. Take note of the existing colors in the room and add decorative elements exhibiting those colors to the couch. If existing chairs in the room contain earthy brown and tan colors, add earth-tone pillows to the blue couch. Then, add blue pillows to the earth-tone chairs. Add curtains and an area rug with a floral pattern or pinstripes of blue, brown and tans to unify the room.
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