Medieval Forest vs Dark Green Nakajima

How close are they?

ΔE 11.7, fair: the same colour family, but not a straight swap. Dark Green Nakajima is a little darker, more muted, warmer than Medieval Forest.

Can I use Dark Green Nakajima instead of Medieval Forest?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Dark Green Nakajima is a little darker, more muted, warmer than Medieval Forest.

Can I use Medieval Forest instead of Dark Green Nakajima?

The same difference applies the other way round: Medieval Forest is a little lighter, more saturated, 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.