What is the Ubuntu colour?
All the colors, graphics, and layout details for Ubuntu can be found in the Ubuntu Design brand assets.
From the colour palette page you'll find that:
The Purple (CANONICAL AUBERGINE) is #772953
The Orange (UBUNTU ORANGE) is #e95420
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.