"Hit the Lights" is a song by American band Selena Gomez & the Scene, taken from their third and final studio album When the Sun Goes Down (2011). The song was written by Leah Haywood, Daniel James and Tony Nilsson, while production of the song was handled by Haywood and James under their production name Dreamlab. Musically, "Hit the Lights" is an up-tempo Dance-pop song. Lyrically, the song speaks about living in the moment and taking risks. An international remixes EP was released on January 20, 2012 for the song's single release. It officially impacted Top 40/Mainstream radio in the U.S. on April 10, 2012. It was the third and final single from the album, as well as the final single released by the group to date. It was also the only single released by the group that was excluded from Selena Gomez's 2014 greatest hits album For You.

"Hit the Lights" was written by Leah Haywood, Daniel James, and Tony Nilsson, while the production was helmed by Haywood and Daniel Pringle. The song was recorded at Dreamlab Studios in Los Angeles, California while the mixing was done at MixStar Studios in Virginia Beach, Virginia. In an interview with Billboard magazine, Selena Gomez explained every track on the song's parent album. In describing "Hit the Lights" she commented that the song's lyrics spoke about things relatable to everyone, commenting "It's kind of one of those songs about living in the moment while keeping it a big huge summer dance track."

"Hit the Lights" is an up-tempo dance song that runs for three minutes and fourteen seconds. The song is written in the key of G major and is set in time signature of common time with a moderately fast tempo of 132 beats per minute. Gomez's vocal range spans from the low note of D₃ to the high note of B₄. The song has a basic sequence of Em–Csus2–Em–Gmaj7–Bm/F# as its chord progression. The lyrics of "Hit the Lights" displays more "maturity" than the band's previous recordings. It is also musically different than the music of When the Sun Goes Down, with critics noting it as a song playable in dance clubs.

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