Red and blue are a classic combo: Update it with a textured blue pillow and varied reds. The clock is a colorful burst, while the lamp's glow adds a soft balance.
Focus Wall Clock, $26, burkedecor.com
Janice Lamp, $60, target.com
Blue Pillow, $17, homegoods.com for stores
Jewel-toned purple and sunny yellow work well together because they're unexpected. The wall hanging is sweet and simple (for even more impact, hang three together). Cheerful blooms like daisies will pop in the vase, and a graphic yellow pillow will make the sofa pop, too.
Reiner Vases, $23 to $30, zgallerie.com
Textile Wall Print, $30 each, threesheets2.com
Ikat Pillow, $29, fabricadabra.us
Bright colors can be sophisticated; just go bold in increments. The mirrors are playful and the pillow's optical illusion (a repeated greyhound silhouette) creates interest. Finally, wood candlesticks neutralize the bright hues.
Mandara Candlesticks, from $32, aestheticmovement.com for stores
Organic Greyhound Pillow in Raspberry, $38 (cover), $56 (with insert), humblecollection.com
Bubble Dot Mirror Set, $69 for five pbteen.com