Colour harmony refers to the use of colors in a way that is pleasing to the eye and creates a cohesive and balanced visual design. There are several ways to achieve color harmony, including using colors that are adjacent to each other on the color wheel (analogous colors), using colors that are opposite each other on the color wheel (complementary colors), or using a combination of colors that form a specific pattern (such as a monochromatic, complementary or split-complementary color scheme).
Colour harmony can also be achieved by using different values of the same color, creating a sense of depth and dimension. The use of tints, shades and tones of the same color can create a more interesting and complex visual design.
Overall, color harmony is an important aspect of visual design and can greatly enhance the aesthetic appeal and effectiveness of any design project.