siqlatun

Scarlet begins not as a color but as a cloth. The word descends from Medieval Latin scarlatum, which is borrowed from Persian and Arabic siqlatun (or siqlāt), naming a rich, finely woven fabric — probably a type of expensive woolen or silk cloth decorated in a characteristic dye. The precise nature of this cloth is disputed: some scholars believe it was always red-dyed, others that the color was a secondary association that developed as the specific scarlet cloth became synonymous with its vivid hue. What is certain is that siqlatun named a prestige textile, a luxury good that moved along the silk and spice routes from the Islamic world into medieval Europe, where it was known first by its cloth-name and later by its color.

By the twelfth and thirteenth centuries, scarlatum had entered Old French as escarlate and English as scarlet, and the fabric-meaning was giving way to the color-meaning — or rather, both meanings coexisted in an era when specific dyes were so expensive that the cloth and its color were inseparable. The reddest, most vivid scarlet was produced from kermes, a scale insect (Kermes vermilio) harvested from oak trees across the Mediterranean. Kermes dye was extraordinarily expensive — producing a pound of dye required tens of thousands of insects — and its use was restricted to wealthy patrons. A garment dyed in true scarlet was a garment that announced its wearer's ability to afford impossible luxury. The color was a price tag worn in public.

The English language preserved both associations of the word for centuries. A 'scarlet' could still mean a type of fine cloth in the sixteenth century, but by the seventeenth century the color-meaning had completely overtaken the fabric-meaning. Scarlet became a purely chromatic word — a particular vivid red, neither the orange-red of vermillion nor the blue-red of crimson, but a pure, brilliant fire-red. It accrued powerful symbolic associations in this period: scarlet for sin (the 'scarlet woman' of the Book of Revelation, adopted into Puritan culture), scarlet for danger, scarlet for the military (the British Redcoats were clad in scarlet wool), scarlet for official ceremony. The word that began as a textile term had become the color of moral extremity.

Nathaniel Hawthorne's 1850 novel The Scarlet Letter sealed the word's symbolic power in the Anglophone world, deploying it as an emblem of public shame — the letter 'A' worn by Hester Prynne. The phrase 'scarlet letter' passed from literary symbol into general metaphor, naming any mark of disgrace permanently attached to a person. But scarlet also retained its associations with brilliance and intensity: scarlet fever, scarlet pimpernel, scarlet macaw — in each case the word contributes not just color but vividness, a sense of something unmistakably, dangerously bright. The medieval cloth that crossed trade routes carrying its foreign name has given English one of its most morally charged colors, a red so saturated it carries the weight of sin and ceremony alike.