An easy rule that works for most people is the 60-30-10 rule. Pick one main color that covers about 60% of the room (walls, big rug, large sofa), a second supporting color for about 30% (smaller furniture, curtains), and a third accent color for the final 10% (cushions, art, decor pieces).
The main color is usually neutral – beige, grey, soft white, or a gentle warm tone. The secondary color can be slightly deeper or richer. The accent color can be bolder and more fun, because it’s in smaller pieces and easier to change later if you get bored.
This simple structure stops the room from becoming a random mix, while still giving you space to play. When in doubt, keep big, expensive items in safe colors and use accents to express personality. It’s much cheaper to change cushions than a whole sofa.
