---
title: "Palette Method Chevreul"
method: POST
path: "/palette/method/chevreul"
---

# Palette Method Chevreul

`POST /palette/method/chevreul`

## Request

- Base URL: `https://api.colourmemory.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.colourmemory.com/palette/method/chevreul`
- Auth: none declared

Your own colour, located in Chevreul's notation, with his documented
relationships, his 1839 contrast rules quoted verbatim, and the six
harmonies of §180 built around it.

Three kinds of claim are kept apart in the response: MECHANICAL navigation
inside the notation (complement, neighbours, gamme, the harmony steps),
TRANSCRIBED rules quoted with their locators, and the two INTERPRETED
steps — locating an arbitrary colour, and putting a number on an apparent
shift — each of which carries its interpretation sentence in the payload.

`your_colours` and `chevreuls_own` are never merged: the first is your
colour moved, the second is a reference rendering of an uncalibrated scan.

## Headers

- `x-api-key` string, nullable
- `origin` string, nullable

## Request body

- ChevreulMethodRequest
  - `hex` string, required
  - `neighbour_hex` string, nullable
  - `harmony` string, nullable
  - `count` integer

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/colourmemory/apis/colour-memory-api.md) · [All operations](https://skmtc.dev/colourmemory/apis/colour-memory-api/llms.txt) · [OpenAPI document](https://skmtc.dev/colourmemory/apis/colour-memory-api/revisions/4ba028f64042?raw)