Nurgling Green vs Putrid Green

How close are they?

ΔE 12.3, fair: the same colour family, but not a straight swap. Putrid Green is a little darker, more saturated, cooler than Nurgling Green.

Can I use Putrid Green instead of Nurgling Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Putrid Green is a little darker, more saturated, cooler than Nurgling Green.

Can I use Nurgling Green instead of Putrid Green?

The same difference applies the other way round: Nurgling Green is a little lighter, more muted, warmer.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.