1. (noun) a battle in 1859 in which the French and Sardinian forces under Napoleon III defeated the Austrians under Francis Joseph I

• battle of magenta

1. (adjective) of deep purplish red

• chromatic

1. (noun) a primary subtractive color for light; a dark purple-red color; the dye for magenta was discovered in 1859, the year of the battle of Magenta

• purplish red
• purplish-red