
Effects
Modifier values for patch 1.20.1.2 are listed below. Check the in-game tooltip for availability and current setup.
| Modifier | Value |
|---|---|
| Fertility | +10% |
| Health | +0.25 |
| Inbreeding Chance | -50% |
In play
Pure-blooded: fertility rises by 10%, health rises by 0.25, and inbreeding chance falls by 50%. Pure-blooded is the inbreeding counter, with fertility and health on the same trait.
How to get Pure-blooded
- Gain: Pure-blooded is passed from parent to child: 15% if one parent has it and 75% if both do. It can also appear on its own in children of related parents (a shared ancestor within four generations), with a small chance that rises with how closely related the parents are.
- Remove or lose: Permanent once a character has it.
Pure-blooded halves the chance of Inbred, so lines that marry close kin keep it by marrying Pure-blooded to Pure-blooded for the 75% inheritance chance. Faiths with the Divine Marriage tenet treat Pure-blooded as a virtue and also boost genetic inheritance rolls, both good and bad.
Questions about Pure-blooded
How do you get Pure-blooded in CK3?
Have children with a Pure-blooded spouse (15% per child, 75% if both parents are Pure-blooded), or have children with a related spouse, which gives a small chance of Pure-blooded alongside the larger risk of Inbred.
Does Pure-blooded stop inbreeding in CK3?
It halves the character's inbreeding chance rather than removing it, so close-kin children can still be born Inbred.