Four colors for a good-looking design match

Quick answer：

To create a visually appealing color scheme, consider using complementary colors, analogous colors, triadic colors, or monochromatic shades. Complementary colors are those that are opposite each other on the color wheel, like red and green or blue and orange, and they create a striking contrast. Analogous colors are next to each other on the color wheel, such as red, red-orange, and orange, which offer a more harmonious look. Triadic colors are evenly spaced on the color wheel, like red, blue, and yellow, providing a vibrant and dynamic combination. Monochromatic schemes use different shades of a single color, which can be soothing and sophisticated.