Flat five chord | Ricmedia Guitar

A flat five chord is composed using a root/1^st, major 3^rd and diminished 5^th (or R/1-3-♭5) intervals played simultaneously. Generally written as C^♭5, C♭5 or C♭5, it is good practice to simply use an uppercase C followed by a super scripted ^♭5 to represent it in writing (ie: C^♭5).

You will more often come across a ♭5 chord written as either a ♯11 (which is equivalent to a ♭5 an octave higher) or as a power chord with the 3^rd omitted.

Flat five chord profile

Intervals	root/1^st, major 3^rd, diminished 5^th or R/1-3-♭5
Stability	Dissonant, unresolved
Grouping class	Triad
Common names (examples in C)	C^♭5, C♭5, C♭5