A D♭ Major chord is a three-note chord that consists of the notes D♭, F, and A♭. It is built using the root note D♭, the major third F, and the perfect fifth A♭. This chord is commonly used in various music genres, providing a bright and uplifting sound. In music theory, the D♭ Major chord is often represented by the Roman numeral I in the key of D♭ Major. It can be played on various instruments, including the piano and guitar, and is frequently found in compositions by famous composers like Ludwig van Beethoven and Frédéric Chopin.