C-flat major
| Relative key | A-flat minor |
|---|---|
| Parallel key | C-flat minor (theoretical) →enharmonic: B minor |
| Dominant key | G-flat major |
| Subdominant key | F-flat major (theoretical) →enharmonic: E major |
| Enharmonic key | B major |
| Component pitches | |
| C♭, D♭, E♭, F♭, G♭, A♭, B♭ | |
C-flat major is a major scale based on C♭, consisting of the pitches C♭, D♭, E♭, F♭, G♭, A♭, and B♭. Its key signature has seven flats. Its relative minor is A-flat minor (or enharmonically G-sharp minor). Its parallel minor, C-flat minor, is usually replaced by B minor, since C-flat minor's three double-flats make it impractical to use. The direct enharmonic equivalent of C-flat major is B major, a key signature with five sharps.
The C-flat major scale is:
Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary. The C-flat harmonic major and melodic major scales are:
C-flat major is the only major or minor key, other than theoretical keys, which has "flat" or "sharp" in its name, but whose tonic note is the enharmonic equivalent of a natural note (a white key on a keyboard instrument).