Does 파랗다 mean "blue" or "green"?

Answer: blue

Donga's Prime Korean-English Dictionary (1998) defines 파랗다 as both "blue" and "green," and it also defines 푸르다 as both "blue" and "green." These definitions, needless to say, suggest that there is some confusion between the meanings of 파랗다 and 푸르다 among Koreans.

A 2006 article HERE, on Korea's 한겨례 newspaper Web site, says that 파랗다 should be defined as "sky blue," and 푸르다 as "grass green." It also mentions that the green light on Korean traffic lights used to be referred to as "파란 신호등" but is now referred to as "푸른 신호등."