Before you despair over decorating around a blue sofa, remember that blue is one of the primary colours upon which all colours are built. Blue, like the other primaries, yellow and red, can coordinate with virtually any colour scheme and look good in your transitional room. So, there's no need to have the blues over a blue sofa. Use the sofa's colour and your imagination to develop a room you will enjoy.
Your blue sofa is an ideal start to achieve the relaxed ambience that coastal cottage decor provides. An authentic faded antique rug, or a new rug with an aged appearance, should have at least a hint of blue in it. Select a chair and throw pillows in a casual blue-and-white stripe and muted colours of sand or other tones found in your rug or draperies. Accent the room with painted white tables and porcelain lamps in simple shapes. Hang art displaying coastal themes. Accessorise with starfish and other coastal objects.
Bring the garden inside with the images and colours of flowers. Like a beautiful blue sky, your blue sofa will be at home surrounded by floral patterns in pink, rose, lavender, blues and natural greens. Mix larger patterns with small ones in chairs and throw pillows. Break up the floral patterns with a simple stripe, grid or dot pattern in the draperies or rug. Use tables that are visually light, such as those in light-coloured woods with feminine shapes or glass tops. Accessorise with a basket or two.
Neutral tones combine with a blue sofa to form a cool colour palette that is adult and urbane. Use black, ivory, cream, taupe, grey and navy in textiles and leather to create a stylish and sophisticated environment. Select chairs and throw pillows in solid colours. Use a black or taupe leather ottoman instead of a coffee table. Keep draperies simple and in a light neutral tone that does not contrast greatly with your walls. A shag or zebra-stripe rug will give your room a jazzy feel. Accessorise with silver and crystal.
Create a more serious or more masculine room by surrounding a blue sofa with brown leather and dark wood tones. Give the room a library feel with attractive hard-bound books in a handsome bookcase. Choose a rug and draperies containing burgundy, brown, gold and blue. Select metal or stone lamps in classic shapes and dark colours to complement the leathers and textiles in the room. Include a floor lamp and an ottoman to accompany a leather reading chair.
The contrast of orange, coral and yellow against blue is the basis for a room reminiscent of the tropics. Choose patterns for throw pillows that have tropical themes. Combine bamboo shades with brightly coloured draperies. Chairs and tables made of rattan or wicker add more tropical flavour. Include live tropical plants in colourful ceramic pots. A natural fibre rug in sisal, seagrass or jute works to give a hard floor a tropical feel. Choose a bamboo rug for placement over carpet.