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
G##EB#GA#E#C#AbBF#DG##3B#GD#A#C#G#EB5DG##E#B#D#A#F#C#7EBGDE#B#AbD#F#C#G##E10GDA#E#G#D#BF#1212G##EB#GA#E#C#AbBF#DG##15B#GD#A#C#G#EB17DG##E#B#D#A#F#C#

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