Color matching in page design refers to the process of selecting and combining colors in a way that creates a visually appealing and cohesive look for a webpage. This involves understanding color theory, which includes concepts such as color harmony, contrast, and saturation. A well-matched color scheme can enhance the user experience by creating a balanced and aesthetically pleasing interface. Key principles include complementary colors, analogous colors, and monochromatic schemes. Effective color matching can also convey the tone and purpose of a website, such as a calming blue for a meditation app or vibrant red for an e-commerce site to promote excitement.