Cadet blue is a grayish blue web color, with its first recorded use as a color name in English occurring in 1892. In 1987, cadet blue was formulated as one of the X11 colors, which later became known as the X11 web colors in the early 1990s.
Space cadet is one of the colors on the Resene Color List, a color list widely popular in Australia and New Zealand. The color was formulated in 2007. This color is apparently a formulation of an impression of the color that cadets in space navy training would wear.
Cadet grey (sometimes spelled cadet gray in parts of the United States) is a somewhat blue-greyish shade of the color grey. The first recorded use of cadet grey as a color name in English was in 1912. Before 1912, the word cadet grey was used as a name for a type of military issue uniform.
