C#° (Diminished)

Db · E · G · 3 notes

Chord

Formula: R – ♭3 – ♭5

Db R

E ♭3

G ♭5

Bass note: Db

Key	Degree
D Major	vii°
B Minor	ii°

The C#° chord is a diminished chord built on C#. It consists of the notes Db, E, G (scale degrees R, ♭3, ♭5).

Diminished chords stack two minor 3rds (3+3 semitones), creating a tense, unresolved sound. They typically appear as the vii° in major keys.

Use the Key Finder to find what key these notes belong to, or the Progression Builder to use this chord in a sequence.