The design with red and blue color combination

Quick answer：

The design with red and blue color combination is a common visual theme that utilizes the complementary colors of the red and blue hues. This combination is often used to create a striking contrast and is found in various fields such as fashion, interior design, and graphic design. In color theory, red and blue are complementary because they are opposite each other on the color wheel, which can make them very effective when used together to draw attention or convey a strong message.