As a given name, it has found occasional usage in the English-speaking world from the late 19th century onwards.
From Borrowing from Old French novel (“new, fresh, recent, recently made or done, strange, rare”) (modern nouvel), from Latin novellus (“new, fresh, young, modern”), diminutive of novus (“new”).
It is ultimately derived from Middle English nyghtyngale "night singer" (Old English nihtegal, composed of niht "night" and galan "sing"). It could also be used referring to the songbird.
This name was borne by a few medieval saints, including a 7th-century Anglo-Saxon priest and an 11th-century archbishop of Cologne.
The word came from Late Middle English cremesyn, which came from obsolete French cramoisin or Old Spanish cremesin, which by itself came from Arabic قِرْمِز (qirmiz), ultimately from Persian کرمست (kirmist), which came from Middle Persian; related to Proto-Indo-Iranian *kŕ̥miš. Cognate with Sanskrit कृमिज (kṛmija).
According to the USA Social Security Administration, 70 girls and 44 boys were named Crimson in 2016. Also in 2012, 59 girls and 32 boys in the USA were named Crimsion.
As an English name it can also derive from the month of August, which was named for the Roman emperor Augustus.