Black Forest Green vs Flat Green

How close are they?

ΔE 12.5, fair: the same colour family, but not a straight swap. Flat Green is a little lighter, warmer than Black Forest Green.

Can I use Flat Green instead of Black Forest Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Flat Green is a little lighter, warmer than Black Forest Green.

Can I use Black Forest Green instead of Flat Green?

The same difference applies the other way round: Black Forest 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.