Color combinations are a key aspect in design, fashion, and aesthetics. The 'most beautiful' color combinations can be subjective, but popular choices often include complementary colors (opposite on the color wheel) and analogous colors (next to each other on the color wheel), which create a harmonious and visually appealing effect. For instance, a combination of blue and orange or purple and yellow is often considered attractive. In fashion, color blocking is a technique that pairs contrasting colors to create a striking look. The field of color theory provides guidelines for creating pleasing color palettes based on the psychological and emotional responses to different colors.