# ColorChord

> Color is to light as chord is to sound. One tone, one wavelength. Mix either, and the Circle of Fifths is the color wheel.

- Site: https://colorchord.jonbailey.xyz/
- Instrument (Living Spectrum): https://colorchord.grok.me/
- Author: @suddenlyjon / https://jonbailey.xyz/
- Version: 1.2.0

## One-liner

ColorChord is a dual harmonic map: each step on the Circle of Fifths is also +30 degrees of hue. Tritones are complementary colors. Chords mix into living light.

## Core mapping (fifths index -> note -> hue)

| # | Note | Hue | Color name |
|---|------|-----|------------|
| 0 | C | 0° | Crimson |
| 1 | G | 30° | Vermilion |
| 2 | D | 60° | Amber |
| 3 | A | 90° | Chartreuse |
| 4 | E | 120° | Emerald |
| 5 | B | 150° | Spring |
| 6 | F#/Gb | 180° | Cyan |
| 7 | Db/C# | 210° | Azure |
| 8 | Ab/G# | 240° | Sapphire |
| 9 | Eb/D# | 270° | Violet |
| 10 | Bb/A# | 300° | Magenta |
| 11 | F | 330° | Rose |

## Theory claims (contention, not dogma)

1. A pure tone is analogous to a pure wavelength seed.
2. A chord (simultaneous tones) is analogous to a color (mixture of light).
3. The fifths geometry and the hue wheel can share one clock face.
4. Maximum musical tension (tritone) aligns with maximum hue contrast (complement).

## FAQ

### What is ColorChord?
An interactive dual mapping of music harmony geometry onto color, with a 3D wheel on this landing page and a full instrument at colorchord.grok.me.

### Is the mapping unique or scientific law?
It is a designed instrument and artistic-scientific contention. Relative fifths steps are fixed; absolute rotation of C onto a hue is a design choice (here C = crimson 0°).

### Where is the API?
The Living Spectrum app exposes `GET /api/chord-color?q=Am7` on colorchord.grok.me for JSON color lookups.

## Related network

- https://jonbailey.xyz/
- https://music.jonbailey.xyz/
- https://tastegraph.jonbailey.xyz/