Monochrome is the fifth studio album by South Korean singer-songwriter Lee Hyori. It was released on May 21, 2013, by B2M Entertainment and distributed by CJ E&M Music. The album, which has an analogue sound and retro feel, departs from her previous style of music. It is her first full-length release after a three-year hiatus since H-Logic (2010).

Lee Hyo-ri is a South Korean singer, record producer, activist, actress and television presenter. She debuted as a member of group Fin.K.L in 1998, which became one of the most popular girl groups in South Korea during the late 1990s and early 2000s. Aside from Fin.K.L, she has also participated in several project groups, including the Refund Sisters and SSAK3 in 2020.