English: This logo consists of a red swirl, which is under a LGPLv3 or later,or, at your option, CC BY-SA 3.0, and a stylized word “debian”, which is apparently not copyrightable.
Swirl
The logo without “Debian” is released under the following common free software license:
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or any later version. This work is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
GNU Lesser General Public LicenseLGPLhttps://www.gnu.org/copyleft/lgpl.htmltrue