C#
Augmented ionian
 Scale
other names: Major augmented, Major #5, Ionian augmented, Ionian #5
notes:C#D#E#F#G##A#B#
intervals:1P2M3M4P5A6M7M
semitones:2213121
GDG##EAbD#A#E#G##EBF#3A#E#B#GBF#C#G#5B#GDG##C#AbD#A#7DG##EBD#A#E#B#9EBF#C#E#B#GDF#C#G#D#1212GDG##EAbD#A#E#G##EBF#15A#E#B#GBF#C#G#17B#GDG##C#AbD#A#19DG##EBD#A#E#B#

Harmonized chords

IIIIIIIVVVIVII
in 3-notesC#Mb6D#mE#majF#majG##dimA#mB#dim
in 4-notesC#M7b6D#m7E#7F#maj7G##dim7A#m/ma7B#m7b5

other scale chords

C#augC#M7b6C#Mb6C#maj9#5C#M#5add9C#M7#5sus4C#M9#5sus4

Scale modes

C# Augmented ionianD# Romanian minorE# Phrygian majorF# lydian #9G## Altered bb7A# Harmonic minorB# Locrian 6

Related

with more notes

C# Bebop major