guitar chord
D♭maj7
Major triad with a major seventh: a half step below the root, an octave up.
Written the other way round it is C♯maj7 — the same twelve keys on a piano, a different piece of notation.
Every fingering that fits a hand
x4311x
hard
x4656x
hard
9baa99
hard · barre
x46564
hard · barre
x4352x
hard · no 5
What is true of it
D♭maj7 is D♭, F, A♭ and C — 1, 3, 5 and 7 counted from D♭.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is x4311x: 4 fingers, held at the 1st fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
2 of the 5 need a barre.
2 strings stay silent.
Where its notes are on the neck
The brass dots are D♭, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
D♭maj7/F
143111
D♭maj7/A♭
446564
D♭maj7/C
x3312x
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.