I'm sure you know the one I'm talking about, that deep magenta. I would like to know it's RGB value.
All the colors, graphics, and layout details for Ubuntu can be found in the Canonical Design, Ubuntu Brand Guidelines.
From this document you'll find that:
The Purple (CANONICAL AUBERGINE) is
RGB colour code for Purple(aubergine) is 119,41,83. That's Red: 119, Green: 41 and Blue: 83
Ubuntu Orange is 221,72,20. That's Red: 221, Green: 72 and Blue: 20.