From Wikipedia, the free encyclopedia. Electric blue is a color close to cyan that is a representation of the color of lightning, an electric spark, and argon sign (including a small part of mercury)s; it is named after the ionized air glow produced during electrical discharges. The first recorded use of electric blue as a color name in English was in 1845. The color electric blue (the version shown below as medium electric blue) was in vogue in the 1890s.