"Blue (Da Ba Dee)" is the first single off Italian group Eiffel 65's debut studio album Europop. The song was released in October 1998.
Blue (Da Ba Dee) is the group's most popular song. It was able to peak at #6 on the ''Billboard'' Hot 100 in the United States. It was also able to peak at #1 in many other countries such as Canada, Ireland, Norway, Switzerland, Germany, France, New Zealand, Australia, Sweden, the Netherlands and the United Kingdom.
In 2001, the song was nominated for a Grammy Award for Best Dance Recording at the 43rd Annual Grammy Awards but it lost to Who Let the Dogs Out? by the Baha Men.