noun
Refers to an area with many brothels, bars, and adult entertainment establishments. Often used in historical or literary contexts, but still understood today.
江戸時代、この辺りは色町として栄えた。
During the Edo period, this area flourished as a red-light district.
彼は色町で夜を過ごした。
He spent the night in the red-light district.
遊郭 specifically refers to a licensed pleasure quarter with a historical, regulated system, while 色町 is a broader, more colloquial term for any red-light area.
風俗街 is a modern term for an adult entertainment district, often implying sex-related businesses, whereas 色町 can carry a more old-fashioned or literary nuance.
Compound of 色 (iro, 'color; love; sensuality') and 町 (machi, 'town'). The exact historical derivation is uncertain, but the word has been used since the Edo period to denote pleasure quarters.