A puzzling name
Rum is a strong drink made from sugarcane. You might expect a color called rum to be brown or amber. The rum on this site is #716675, a grayish purple. It comes from an open list of color names online, and that list does not explain the name or give a source for the code.
Wikipedia's rum is brown
The alphabetical list of colors on Wikipedia gives rum as #9A4E40, a reddish brown. That fits the drink much better, but it does not match the code here at all. The same list also has red rum, #973A4A.
The closest named color to this page is old lavender. Mauve taupe is a warmer cousin.

