About this issue
Why this chart.
The Complete Piano Chord Chart shows every common chord with letter labels on each highlighted key — the exact format people search for when they query 'piano chord chart with letters'. We added that explicit labeling because most piano chord charts assume you already know how to read keyboard layouts; this one assumes you don't.
Each chord is rendered as a two-octave keyboard with the chord tones highlighted and labeled. Major, minor, dominant 7th, major 7th, minor 7th, diminished, augmented, sus2, sus4 — the same harmonic vocabulary as the guitar chart, but rendered for keyboard.
Color coding by root note carries over from the guitar chart. The white-key root notes (C, D, E, F, G, A, B) are plain backgrounds; the black-key roots (C♯/D♭, etc.) get a slightly different shading so you can scan by accidental too.
How to use it
Find the chord name. The highlighted keys are the notes to play. For most chords, play the lowest note with your left hand (a single bass note is fine to start) and the upper notes with your right.