Also G Major (Ionian), A Dorian
F# Locrian: F# G A B C D E. Formula 1 ♭2 ♭3 4 ♭5 ♭6 ♭7. Same notes as G Major (Ionian), A Dorian, B Phrygian. The darkest mode, with a flat 2nd and a flat 5th: its tonic chord is diminished, so it rarely feels at rest. It fits over half-diminished chords.