The ROS press kit includes vector versions of the ROS logo and spacing guidelines. You may use the ROS logo in your projects subject to the trademark policy below.
For images relevant to ROS and the PR2 robot, have a look at the Willow Garage Flickr stream.
The "ROS" name, the "Nine Dots" ROS logo, and other ROS trademarks are property of Open Source Robotics Foundation, Inc. ("OSRF" or "Open Robotics").
Below are the relevant agreements, rules, and guidelines on displaying the ROS trademarks, which may be updated from time to time. Use of any ROS trademark must be in accordance with this Policy or a separate written agreement between you and Open Robotics.
Subject to compliance with this Policy, you may use the "ROS" name or the "Nine Dots" ROS logo to indicate your implementation of the ROS platform as set forth in this Policy. All other uses of the ROS trademarks must be expressly approved in writing by Open Robotics. To inquire about approval for any such other uses of the ROS trademarks, please contact firstname.lastname@example.org.
Any and all use of the "ROS" name, the "Nine Dots" ROS logo, and other ROS trademarks inures to the benefit of Open Robotics. You agree not to do anything inconsistent with Open Robotics' ownership of these trademarks, including without limitation seeking registration of any mark, domain name, or social media name/handle comprised of or incorporating the "ROS" name, the "Nine Dots" ROS logo, or any other ROS trademarks. You likewise agree not to make any use of the ROS trademarks that is likely to confuse or mislead consumers with respect to any relationship with Open Robotics or to suggest that Open Robotics sponsors, endorses, or approves your product or implementation; and you agree not to make any use of the ROS trademarks that is likely to harm the reputation and goodwill built up in the marks. You acknowledge and agree that any and all permissions to use any ROS trademarks are limited, personal, non-transferable, non-sublicensable, and revocable. Open Robotics may revoke any such permissions in its sole and absolute discretion.
Any use of the ROS trademarks needs to include this attribution in your communication: ROS [and/or the “nine dots” ROS logo and/or any other ROS trademark used] is a trademark of Open Robotics.
For permitted uses of the logo, the color value for print is 533C and the online hex color is #22314E.