Eternal Blue is the debut studio album by the Canadian heavy metal band Spiritbox. It was released on September 17, 2021, through the band's own Pale Chord Records in partnership with Rise Records. Courtney LaPlante and Mike Stringer privately formed Spiritbox in 2016 following their departure from Iwrestledabearonce. After revealing the project and releasing an extended play in 2017, the earliest development on what would become Eternal Blue commenced in 2018. The band recorded several other singles in the meantime, which were compiled onto a second extended play in 2019. Their first full-length record was initially slated for an April 2020 release, but development and promotion were initially halted due to the COVID-19 pandemic.

Spiritbox is a Canadian heavy metal band, originally from Victoria, British Columbia, publicly established by guitarist Mike Stringer and vocalist Courtney LaPlante in October 2017. The band's full lineup comprises married couple LaPlante and Stringer alongside drummer Zev Rose, and bassist Josh Gilbert. The band's style incorporates electronic elements and draws from a variety of influences, crossing multiple metal subgenres with its roots in metalcore and progressive metal. Their music is currently released through their label, Pale Chord, via a partnership with Rise Records.