Rotten Green vs Zombie Flesh

How close are they?

ΔE 11.6, fair: the same colour family, but not a straight swap. Zombie Flesh is a little darker, warmer than Rotten Green.

Can I use Zombie Flesh instead of Rotten Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Zombie Flesh is a little darker, warmer than Rotten Green.

Can I use Rotten Green instead of Zombie Flesh?

The same difference applies the other way round: Rotten Green is a little lighter, 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.