How to color coordinate to look nice

Quick answer：

To achieve a nice color coordination, one should consider color theory principles such as complementary colors, analogous colors, and monochromatic schemes. Complementary colors are opposite on the color wheel and create a vibrant contrast. Analogous colors are next to each other and offer a harmonious blend. Monochromatic schemes use various shades of the same color. Experimenting with these principles can help in creating aesthetically pleasing color combinations.