Solid to gradient color poster design

Quick answer：

Solid to gradient color poster design refers to a visual design technique where a poster transitions from a solid color to a gradient of colors. This design style can create a visually striking effect and is often used in graphic design for a wide range of applications, including advertisements, social media posts, and artistic works. The transition can be linear, radial, or even more complex patterns, and can be applied to backgrounds, text, or other design elements.