Dark Yellow Green vs Green Brown

How close are they?

ΔE 14.1, fair: the same colour family, but not a straight swap. Green Brown is a little lighter, warmer than Dark Yellow Green.

Can I use Green Brown instead of Dark Yellow Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Green Brown is a little lighter, warmer than Dark Yellow Green.

Can I use Dark Yellow Green instead of Green Brown?

The same difference applies the other way round: Dark Yellow 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.