piano chord
D♭
D♭1F3A♭5
A major third and a perfect fifth over the root.
Written the other way round it is C♯ — the same twelve keys on a piano, a different piece of notation.
What is true of it
D♭ is D♭, F and A♭ — 1, 3 and 5 counted from D♭.
On an instrument that cannot reach all 3, the 5 goes first, in that order.