Scarlet

Derived from the Old French escarlate, which originally referred to a luxury wool textile before it became synonymous with the vivid red dye used to color it. The name entered American records in 1939, the same year Gone with the Wind arrived in theaters. It spent decades as a rare curio before catching a wave of color-name enthusiasm after the turn of the century.

A bearer of this spelling is almost certainly young enough to be dealing with algebra homework. The name suggests someone whose parents liked the drama of the color but preferred to drop the second t on the birth certificate. It reads modern and sharp, though she spends a non-trivial amount of time correcting coffee cups.