C#
Ionian pentatonic
 Scale
notes:C#E#F#G#B#
intervals:1P3M4P5P7M
semitones:41241
GDAEG#EbBbE#AEBF#3BbE#B#GBF#C#G#5B#GDAC#G#EbBb7DAEBEbBbE#B#9EBF#C#E#B#GDF#C#G#D#1212GDAEG#EbBbE#AEBF#15BbE#B#GBF#C#G#17B#GDAC#G#EbBb19DAEBEbBbE#B#

Harmonized chords

IIIIIIIVV
in 3-notes-E#m#5---
in 4-notes-E#mb6b9---

other scale chords

C#majC#5C#sus4C#maj7C#M7sus4

Scale modes

C# Ionian pentatonicE# Balinese (Pelog)

Related

with more notes

C# MajorC# Harmonic majorC# Double harmonicC# BebopC# Bebop majorC# Japanese (Ichikosucho)C# Japanese (Taishikicho)C# Kafi ragaC# Purvi ragaC# Mela Suryakantam (17)C# Mela Hatakambari (18)C# Mela Naganandini (30)C# Mela Gangeyabhusani (33)C# Mela Sulini (35)C# Mela Chalanata (36)