The color wheel can be divided in half, with warm colors on one side and cool colors on the other

Warm colors like red, yellow and orange tend to heat up a room. These colors are considered energetic and stimulate activity, but also tend to close in and cozy up a room. They are a good choice for kitchens, dining rooms, living rooms, and play rooms.

Cool colors like blue, green and violet are quiet and tranquil colors. They are best used in rooms that require relaxation and calm. Use cool colors in bedrooms, bathrooms, dens, and nurseries. Or use them in sunny rooms where they act as a counter balance to direct sun light. Cool colors give the illusion of pushing back walls making the room appear larger.