"Blue" is a song released in 1958 by Bill Mack, an American songwriter-country artist and country radio disc jockey. It has since been covered by several artists, in particular by country singer LeAnn Rimes, whose 1996 version became a hit. The song won Mack the 1996 Grammy Award for Best Country Song, a 1996 Academy of Country Music Award for Song of the Year, a 1997 Country Music Association Awards nomination for Song of the Year, a 1997 Country Radio Music Awards nomination for Song of the Year, and is included on the CMT list of the top 100 country songs of all time. Rimes' rendition won the 1996 Grammy for Best Female Country Vocal Performance.

Margaret LeAnn Rimes Cibrian is an American singer, songwriter and actress. She originally rose to success as a country music artist at age 13 with 1996's "Blue". She has since crossed over into pop, contemporary Christian, and other musical genres. Rimes has placed over 40 singles on international charts since 1996. In addition, she has sold over 48 million records worldwide, with 20.8 million album sales in the United States according to Nielsen SoundScan. Billboard ranked her number 17 in terms of sales success in the 1990–1999 decade.