Black and blue gradient image

Quick answer：

A black and blue gradient image is a visual representation that transitions smoothly from black to blue, often used for artistic or design purposes. Gradient images are created by blending two or more colors together in a smooth transition. In this case, the image specifically focuses on the colors black and blue, which may be used to evoke a sense of calmness, depth, or transition. The creation of such images can be done using various graphic design software or applications.