Monochromatic background image design

Quick answer：

Monochromatic background image design refers to the creation of visuals with a single color as the background, often used in graphic design, web design, and photography. This style can convey a sense of simplicity, elegance, and focus on the subject matter. It is achieved by selecting a single hue and applying it uniformly across the background, sometimes with gradients or textures to add depth. The design principle is to reduce visual clutter and emphasize the foreground elements.