Design of red and blue color combination

Quick answer：

The design of red and blue color combinations is a topic in the field of color theory and design. Red and blue are complementary colors on the color wheel, meaning they are opposite each other and can create a striking contrast. They are often used together to convey energy, passion, or a sense of excitement. In design, the balance between red and blue should be carefully considered to ensure harmony and visual appeal. Color theory principles, such as contrast and saturation, play a significant role in the effective use of these colors in design.