A color gradient is a smooth transition between two or more colors. It can be linear, where colors blend in a straight line, or radial, where colors radiate from a central point. Gradients are commonly used in design, art, and digital graphics to create depth and visual interest. In digital applications, gradients can enhance backgrounds, buttons, and other elements. They can be created using software like Adobe Photoshop or Illustrator, allowing designers to customize the colors and direction of the gradient. This technique helps to convey mood and emotion in visual compositions.