C° (Diminished)

C · Eb · Gb · 3 notes

Chord

Formula: R – ♭3 – ♭5

C R

Eb ♭3

Gb ♭5

Bass note: C

Key	Degree
Db Major	vii°
Bb Minor	ii°

The C° chord is a diminished chord built on C. It consists of the notes C, Eb, Gb (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.