Pure blue color image

Quick answer：

A pure blue color image is a visual representation where the color blue dominates, typically without any other colors present or with minimal color variation. It is often used for various artistic, decorative, or symbolic purposes. In digital media, achieving a 'pure blue' can be achieved by setting the color value to its maximum intensity in the RGB color model, where R (red), G (green), and B (blue) all have a value of 255.