From an English surname that denoted a person who sold or made clothes made of scarlet (a kind of cloth, possibly derived from Persian
سقرلاط (saqrelāṭ)). Margaret Mitchell used it for the main character, Scarlett O'Hara, in her novel
Gone with the Wind (1936). Her name is explained as having come from her grandmother. Despite the fact that the book was adapted into a popular movie in 1939, the name was not common until the 21st century. It started rising around 2003, about the time that the career of American actress Scarlett Johansson (1984-) started taking off.