Design with red and blue

Quick answer：

In design, the combination of red and blue is often used to create a dynamic and visually striking aesthetic. Red, being a warm color, can evoke emotions such as passion and energy, while blue, a cooler color, is often associated with calmness and stability. The contrast between the two colors can be used to draw attention and emphasize certain elements within a design. This color scheme can be applied in various fields such as graphic design, interior design, and fashion.