The chart below lists the common chords in the key of E flat major. The first row are triads and four note voicings are in the second row. Roman numerals indicate each chords position relative to the scale.

• E flat major scale notes: Eb F G Ab Bb C D
• Major key chord sequence: Maj min min Maj Maj min dim

D sharp major
The same chords and scale notes are used for the key of D sharp major but this key isn't used often because of notation difficulties caused by the need for a double sharp. More info on this can be found here in chord theory.