Gradient blue image

Quick answer：

A gradient blue image is a visual representation where the color transitions smoothly from one shade of blue to another. This effect is commonly used in digital art, graphic design, and photography to create depth, convey emotions, or highlight certain areas. In digital creation, gradient blue images are often created using image editing software like Adobe Photoshop or GIMP, where various shades of blue are blended to form a seamless transition.