Complementary color schemes involve pairing colors that are adjacent on the color wheel. In the case of four-color邻近色 combinations, you would select colors that are each next to each other, creating a harmonious and balanced look. This can include using shades of a single color family, or combining colors from adjacent families on the color wheel. For example, a combination could be a mix of blues, greens, and purples, all of which are adjacent to each other. Such schemes are often used in interior design, fashion, and art to create a cohesive and aesthetically pleasing palette.