Red and blue gradient design

Quick answer：

Red and blue gradient design refers to a visual design technique that utilizes a smooth transition of colors from red to blue, often used in graphic design, web design, and art to create a sense of movement, emotion, or to convey a specific theme. Gradient designs can be monochromatic, using different shades of red and blue, or bicolor, incorporating other colors into the mix. They are particularly effective in creating focal points and emphasizing certain elements in a composition.