Color coordination on websites is an important aspect of web design that involves selecting and arranging colors in a way that creates a visually appealing and cohesive look. It includes choosing a color scheme that is both harmonious and reflects the website's purpose or brand. This can involve using contrasting colors for emphasis, complementary colors for balance, and appropriate shades and tints to convey a specific mood or atmosphere. Effective color coordination can enhance user experience and make the website more engaging.