To ensure a blue living room seems serene rather than cold choose soft tone or a paler teal hue. These deeper shades will keep the look cocooning rather than chilly, although the addition of white here is a timeless combination that, with good lighting, can be marine-fresh in daylight and grownup indulgence at night.
Don’t just think in terms of standard paint colours; a blue wall can add a huge amount of drama whilst also feeling classical and restful. Try breaking up solids with patterned throws for sofas or large checks on armchairs. You could even add blue in your window blinds with a look that's subtle and stylish.
Burnished wooden trays sporting art books or large gilt frames on walls should be used to break up the effect of this dominating shade and to add some New England elegance.