ChordColor is a free interactive music theory tool that maps all 12 musical intervals to a rainbow color spectrum. The root is red, the major third is yellow, the perfect fifth is blue, and every interval in between has its own distinct color. This system lets you see the harmonic structure of any chord at a glance — across 26 instruments, 528 chords, and over 29 million computed finger positions.
Select any instrument — guitar, bass, ukulele, piano, banjo, mandolin, harp, accordion, kalimba, organ, lap steel, or grid controllers like LinnStrument, Ableton Push, and Launchpad — and explore chords with color-coded intervals, fingering diagrams, and real instrument audio. Connect a MIDI controller for live visualization, or use the built-in chord picker to browse all 44 chord qualities in every key.
ChordColor includes a chord explorer for 26 instruments, a 5-track MIDI sequencer (ChordColor Studio) with piano roll, chord stamping, and tension heatmap, and a chord chart reader (ChordColor Songs) with 390 public domain songs across 11 genres. Transpose any song, import your own chord charts, and follow along with a built-in metronome. Whether you are a beginner learning your first chords or an advanced player exploring extended harmony, the color system makes interval relationships immediately visible.