Ruby Blue are fronted by blues-belter Ruby Presnell, daughter of actor Harve Presnell. Presnell has shared the stage with Etta James, Charles Brown, Junior Wells, Buddy Guy, and John Lee Hooker. In addition, she has performed with the San Diego Symphony, Elvin Bishop, Papa John Creach, Solomon Burke, Poncho Sanchez, Hollywood Fats, C.J. Chenier, and Elvin Bishop.
As of 2011, Presnell’s bandmates in Ruby Blue include Rob Thorsen (bass), Bob Boss (guitar), and Richard Sellers (drums).