Color clash red blue refers to the combination of red and blue colors in a way that creates a striking contrast. This can be seen in fashion, interior design, and graphic design, where the juxtaposition of these complementary colors can create a bold and eye-catching effect. In color theory, red and blue are considered complementary colors, as they are located opposite each other on the color wheel. This creates a dynamic tension that can be used to draw attention or evoke emotion.