What is a Chromatic Mediant?

A chromatic mediant is a chord whose root lies a third away from the tonic but differs in quality or contains notes outside the original key. These chords share one common tone with the tonic but introduce chromatic notes that create a dramatic and colorful harmonic shift.

For example, in the key of C major, the normal mediant chord is E minor, which belongs to the scale. A chromatic mediant might be E major or A♭ major. These chords are still a third away from C, but they contain notes that are outside the C major scale, giving the harmony a striking and unexpected sound.

Chromatic mediants became especially popular in Romantic-era classical music, where composers used them to create rich and emotional harmonic changes. Today they are also common in film music, orchestral writing, and modern pop compositions, where the bold shift in harmony can add drama and intensity while still maintaining some connection through shared tones.