Diminished Triad
The diminished triad features a flat third and flat fifth, creating a tense, unstable sound. It occurs naturally on the seventh degree of the major scale and resolves strongly to the tonic.
Symbol: dim, °
Formula: 1-♭3-♭5
C Diminished Triad: C – D# – F#
Choose a Root
Interval Formula
| Degree | Interval | Semitones from Root | Note (C Diminished Triad) |
|---|---|---|---|
| 1 | Root (1) | 0 | C |
| ♭3 | Minor 3rd (♭3) | 3 | D# |
| ♭5 | Tritone (♭5) | 6 | F# |
Related Chords
Common Progressions
- vii°-I
- ii°-V