To add to this: the RGB colorspace reproducible by modern displays is limited compared to the full colorspace that humans can see so when photographing pigments, photographers need a proper reference for color correction. Wikipedia says the CIELCh of Maya blue is (76, 66, 238°) which is at the edge of the RGB colorspace. Depending on purity and composition, the real pigment might be just outside the range, so for a viewer to get a realistic portrayal they need that contrast too.

Mesoamerican cultures did use a lot of body paint for special occasions like warriors going into battle and religious ceremonies. This Maya blue would likely have been used by priests and other high status individuals in religious ceremonies, rather than the general population though.