Todays hair color: Magenta or fuchsia hair with matching eyebrows. Really great intense color. Rich purple to pink/red, but super saturated in color. Probably works best for darker haired people.
Color background according to Wikipedia: Magenta was first introduced as the color of a new aniline dye called fuchsine, patented in 1859 by the French chemist Francois-Emmanuel Verguin. Its name was changed the same year to magenta, to celebrate a victory of the French and Sardinian army at the Battle of Magenta on June 4, 1859, near the Italian city of that name.
The web color magenta is also called fuchsia.