# 4B 43 4D 53 — File format magic numbers

For 4B 43 4D 53, offset is 4B; extension is icm; format is ICC profile, recorded from its source on 2026-08-03.

- **Hex signature:** 4B 43 4D 53 _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 4B _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** icm _(unconfirmed — we could not tie this to the quote below)_
- **Format:** ICC profile

## What the source says

> ICC profile

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).