碧へき色しょくMeanings1noungreen; emeraldA literary or formal term for a deep, jewel-like green, often used in poetic or descriptive contexts. In everyday speech, 緑色 (みどりいろ) is more common.湖みずうみの水みずは碧へき色しょくに輝かがやいていた。The lake water shone a deep emerald green.