Color palettes are collections of colors that are used together in design and art to create a cohesive look. They can evoke emotions, set moods, and enhance the overall aesthetic of a piece. Designers often choose palettes based on color theory principles, such as complementary or analogous colors, to achieve harmony in their work. In digital design, color palettes are essential for branding and user experience. They help in creating visual identity and can influence how users perceive a brand. Tools like Adobe Color and Coolors allow designers to create and explore various palettes, making the process of selecting colors more accessible and enjoyable.