Magenta n. : An aniline dye obtained as an amorphous substance having a green bronze surface color, which dissolves to a shade of red; also, the color; -- so called from Magenta, in Italy, in allusion to the battle fought there about the time the dye was discovered. Called also fuchsine, roseine, etc.

Example:
How to make a Magenta colored cake?

Taxonomy
fuchsia, pigment, wavelengths, pink, Color coordinates, Normalized, byte, additive, color fuchsia, red and blue, pigment colors, free encyclopedia, dye, 1890s, FF00FF, primary colors, hue, web color.

Defination from the web:
Magenta is a purplish-pink color evoked by lights with less power in yellowish-green wavelengths than in ... In the Munsell color system, magenta is called red-purple. In the CMYK color model used in printing, it is one of the primary colors of ink. ...