Medieval Forest vs Arphen Jade

How close are they?

ΔE 11.8, fair: the same colour family, but not a straight swap. Arphen Jade is noticeably darker, cooler than Medieval Forest.

Can I use Arphen Jade instead of Medieval Forest?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Arphen Jade is noticeably darker, cooler than Medieval Forest.

Can I use Medieval Forest instead of Arphen Jade?

The same difference applies the other way round: Medieval Forest is noticeably lighter, 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.