The color wheel, which has 12 colors total, shows us the shades of color that occur from mixing each combination of primary colors. If you look directly across from one color, you’ll see its complementary color.
Colors opposite each other on the color wheel work best together. Blue and orange, turquoise and peach, and purple and yellow are all examples of complementary pairings that make great starting points when considering which colors to pair in your interiors. Use sites like Paletton to experiment with the shades of different color combinations, or let Home Depot help you figure it out with their online Color Center. Their app can show you what a specific paint color will look like on your walls, so you can get a sense of its effect well before you commit.