Smoldering Persia Crimson

The progressive participle of smolder, to burn slowly without flame. Used as a color word since the late nineteenth century for the deep reds and oranges of barely-flame coal — the warm saturated darks where the heat is internal rather than emitted. Sits in the bold-and-warm corner, slightly less luminous than burning and slightly less calm than rich.

Latin Persia, Persia. As a color modifier, persia implies an Achaemenid-and-Safavid-Imperial quality, the visual register of Achaemenid-Persia-and-Safavid-Persia hand-built Persepolis-and-Isfahan-and-Persian-rug-and-tile Imperial-Persian surfaces under Persepolis-and-Isfahan Achaemenid-and-Safavid Imperial-Persian high-desert light. Sits at the modifier-and-cultural end of the grid, parallel to median and achaemenid in usage.

From the Old Spanish cremesin, itself from the Arabic qirmiz — the kermes scale insect, dried and ground into a brilliant carmine dye prized in the medieval Mediterranean. For centuries the most expensive red on a draper's shelf, reserved for cardinals, kings, and the cloth that gave English the word crimson. Cooler than scarlet, deeper than rose; the color of pomegranate seeds and a serious occasion.