C♯m(maj7)♭5 / D♭m(maj7)♭5

4-note minor-major 7th flat 5 on C♯ / D♭C♯, E, G, C.

Press to hear the chord strummed low to high.

A diminished triad carrying a major seventh — rare and severe, the darkest corner of the minor-major family.

The notes

Pitches taken from the first fingering below — click any note to open its frequency page.

Interval formula

DegreeNoteWhat it is
1C♯root
♭3Eminor third
♭5Gflat fifth (diminished)
7Cmajor seventh

The formula reads in semitones above the root (C♯): 1, ♭3, ♭5, 7. A voicing may leave a tone out — often the fifth — but never adds one from outside this set.

Guitar fingerings · 4

421
open position
4fr1234
from fret 4
9fr12211
from fret 9
11fr1243
from fret 11

Ukulele fingerings · 4

13
open position
3fr4213
from fret 3
3fr4211
from fret 3
6fr1243
from fret 6

Read a diagram top-down: the thick bar is the nut, dots are where to press (the number is which finger), means play the open string, means don't play it. A bar across strings is a barre.

Other C♯ / D♭ chords

m(maj7)♭5 chords on every root