Key of C# Major

The 7 diatonic chords in C# Major, shown with their Roman numeral function and color-coded intervals.

C# Major Scale & Chords

The C# Major scale contains the notes: C#, D#, F, F#, G#, A#, C.

The 7 diatonic chords are: I = C#, ii = D#m, iii = Fm, IV = F#, V = G#, vi = A#m, vii° = Cdim.

I

ii

iii

IV

V

vi

vii°

Pop (I-V-vi-IV)

C# → G# → A#m → F#

Classic Rock (I-IV-V)

C# → F# → G#

50s (I-vi-IV-V)

C# → A#m → F# → G#

Jazz ii-V-I

D#m → G# → C#