Nurgling Green vs Moldy Skin

How close are they?

ΔE 12.5, fair: the same colour family, but not a straight swap. Moldy Skin is a little lighter, warmer than Nurgling Green.

Can I use Moldy Skin instead of Nurgling Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Moldy Skin is a little lighter, warmer than Nurgling Green.

Can I use Nurgling Green instead of Moldy Skin?

The same difference applies the other way round: Nurgling Green is a little darker, cooler.

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.