The main religion is based on light. Worshippers back in the day worshiped the sun, but over time throught the research of light they came to realize that the light emitted from the sun can be split up into a rainbow using prisms. This led to the now-common belief that the sun is a singular deity, but it has seven refractions. Each refraction is as follows:

Red - Absorption - Passion, sacrifice, war - War Clerics, Paladins

Orange - Diffraction - Adaptability, Change, transformation, diplomacy - Trickery Clerics, Bards

Yellow - Emission - Revelation, prophecy, - Light Clerics, Diviners

Green - Transmission - Growth, healing, connection - Life Clerics, Druids

Blue - Reflection - Truth, justice, memory - Knowledge Clerics, Abjurers

Indigo - Interference - Mystery, duality, secrets - Twilight Clerics, Shadow Sorcerers

Violet - Polarization - Purity, discernment, balance - Order Clerics, Judges

These refractions became branches of a larger church that started in kingdom of Grainstrough but has since spread to almost every kingdom. Basically everyone on the surface believes in one of these branches, but which one varies from family to family and person to person. The High Luminary runs the church, but each of the refractions has a Luminary to lead each branch as well.

main Cathedral based on la sagrada familia