The Stack Exchange colors are Stack Exchange Cyan Cobalt Blue, Stack Exchange Steel Blue, Stack Exchange Carolina Blue, Stack Exchange Pale Cyan, we recommend using the Stack Exchange color palette for personal projects and in the case of commercial use to visit the company website. The color codes: RGB, CYMK for print, and Hex for web HTML/CSS. Stack Exchange Official Website
Download the Stack Exchange color scheme palette image with the color hex codes as a single image. These are the suggested colors to be used for digital media.