C#
Major
 Scale
other names: Bilaval theta, Ethiopian (A raray), Ionian, Mela Dhirasankarabharana (29)
notes:C#D#E#F#G#A#B#
intervals:1P2M3M4P5P6M7M
semitones:2212221
AEB#GA#E#C#G#BF#DA3B#GD#A#C#G#EB5DAE#B#D#A#F#C#7EBGDE#B#G#D#F#C#AE10GDA#E#G#D#BF#1212AEB#GA#E#C#G#BF#DA15B#GD#A#C#G#EB17DAE#B#D#A#F#C#

Harmonized chords

IIIIIIIVVVIVII
in 3-notesC#majD#mE#mF#majG#majA#mB#dim
in 4-notesC#maj7D#m7E#m7F#maj7G#7A#m7B#m7b5

other scale chords

C#majC#5C#sus4C#sus2C#Madd9C#6C#6/9C#maj7C#maj9C#maj13C#sus24C#M7sus4C#M9sus4

Scale modes

C# MajorD# DorianE# PhrygianF# LydianG# MixolydianA# Minor (natural, pure)B# Locrian

Related

with less notes

C# Pentatonic majorC# Ionian pentatonicC# Ritusen

with more notes

C# BebopC# Bebop majorC# Japanese (Ichikosucho)C# Japanese (Taishikicho)