Blue" is the eighth digital single by Dynamic Duo. It was released on August 7, 2019 and features Crush and Sole. It was later included in their tenth studio album Off Duty. Video links Music clip This article is a stub. You can help Kpop Wiki by expanding it. Retrieved from "https://kpop.fandom.com/wiki/Blue_(Dynamic_Duo)?oldid=161628" Categories: Single article stubs Singles Digital singles Dynamic Duo 2019 releases 2019 digital singles Community content is available under CC-BY-SA unless otherwise noted.