The role of color in website design is to create visual interest, convey information, and establish a mood or atmosphere. Colors can also have psychological effects on website visitors, such as evoking certain emotions or associations. When choosing a color scheme for a website, it's important to consider the brand's identity and the message the website is trying to convey. For example, a law firm's website might use a conservative color scheme of blue and gray, while a children's toy store's website might use a more playful color scheme of bright, primary colors. It's also important to ensure that the colors used on the website are accessible to people with color blindness or other visual impairments.