Leia is a moon of the planet Lotran. The rock on the moon looks blue because of the high concentration of chalcanthite.
There are only a few multi-cellular organisms on the moon for the rest there are only bacteria.
Chalcanthite formations give the moon its unique charm, attracting tourists to take in the calming presence of the moon, while serving as a cover for meetings on Lotran (It is not a secret where these are but when these are).
The planet's crust is mostly made of chalcanthite ( a blue mineral), these form beautiful structures sometimes over 150 meters high. Limited geological activity causes naturally formed erratic structures.