«Blue (Da Ba Dee)» (also released as «I’m Blue» in some countries) is a Eurodance song released in 1999 by Italian group Eiffel 65, as a single from their debut album Europop (1999).

The song is the group’s most popular single, reaching number one in many countries such as Ireland, the United Kingdom, the NetherlandsFrance,SwedenSwitzerlandNew ZealandNorwayAustralia, and Germany, as well as reaching #6 on the Billboard Hot 100 in the United States. In theUnited Kingdom, the song originally entered the Top 40 purely on import sales. It was only the third single to do this.