C# is a major, spelled C#, E# and G#. In Drop D tuning (D2 A2 D3 G3 B3 E4) the easiest shape is x46664, which sits at fret 4, needs a barre across 5 strings at fret 4 and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
C#
E#
G#
Interval
1P
3M
5P
12 ways to play it
Ordered by how hard they are to fret, easiest first, one per position on the neck. Fret numbers are relative to the position marked beside each grid.
x46664sits at fret 4, needs a barre across 5 strings at fret 4 and mutes 1 stringx43121sits at fret 1, needs a barre across 3 strings at fret 1 and mutes 1 string11111110xxsits at fret 10, spans 1 fret and mutes 2 stringsxx666xsits at fret 6, needs a barre across 3 strings at fret 6 and mutes 3 stringsxx111099sits at fret 9, needs a barre across 2 strings at fret 9 and mutes 2 stringsx4366xsits at fret 3, spans 3 frets and mutes 2 strings111111131413sits at fret 11 and needs a barre across 3 strings at fret 11x4362xsits at fret 2, spans 4 frets and mutes 2 strings1181110xxsits at fret 8, spans 3 frets and mutes 2 stringsxxx131413sits at fret 13, needs a barre across 3 strings at fret 13 and mutes 3 stringsx4666xsits at fret 4, spans 2 frets and mutes 2 stringsxxx664sits at fret 4, spans 2 frets and mutes 3 strings
Keys C# belongs to
C# is diatonic to 24 of the 96 keys this app knows, playing a different role in each.