Guitar Chords in the Key of C minor

The chord formula for any minor key is minor, diminished, Major, minor, minor, Major, Major.

The chords in the key of C minor are C minor, D diminished, E♭ Major, F minor, G minor, A♭ Major, and B♭ Major.

A common way to number these chords is by Roman numerals: I, ii, iii, IV, V, vi, vii. Numerals that represent a major chord are usually capitalized, and minor and diminished chords are lower case.