"Blue" is a song by the American band Eiffel 65, released in 1998. It features a catchy melody and electronic dance music elements, making it popular in clubs and on radio stations. The song's lyrics describe a character who feels isolated and lives in a blue world, symbolizing sadness and loneliness. The track became a global hit, reaching the top of the charts in multiple countries. Its distinctive chorus and repetitive structure contributed to its widespread appeal. "Blue" is often remembered for its memorable hook and has been featured in various media, solidifying its place in pop culture.