Gradient plane composition poster

Quick answer：

Gradient plane composition posters often utilize a smooth transition of colors or tones across a flat surface to create visually appealing designs. They are commonly used in graphic design for advertising, art, and various media. These posters can be created using digital tools or traditional art techniques like watercolor or painting. The design principle focuses on the harmony of colors and the aesthetic of the gradual change, which can evoke emotions or convey messages effectively.