écarlate

from Old French escarlate via Medieval Latin scarlatum, from Persian سقرلاط saqirlāṭ, which designated a precious fabric, rather blue in origin, decorated with seals, and which is derived from the ancient Greek σφραγίς sphragís (seal); or, according to the cnrtl, the Arabic version would rather come from a medieval Greek σιγιλλάτος, the latter from a Late Latin sigillatus, this Late Latin being made from the classical Latin sigillum "seal" (diminutive of signum), and would have the meaning of "fabric covered with seals"