Jade Green vs Majestic Fortress

How close are they?

ΔE 11.7, fair: the same colour family, but not a straight swap. Majestic Fortress is noticeably darker, warmer than Jade Green.

Can I use Majestic Fortress instead of Jade Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Majestic Fortress is noticeably darker, warmer than Jade Green.

Can I use Jade Green instead of Majestic Fortress?

The same difference applies the other way round: Jade Green is noticeably 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.