Deep Green vs Ferocious Green

How close are they?

ΔE 12.6, fair: the same colour family, but not a straight swap. Ferocious Green is warmer than Deep Green.

Can I use Ferocious Green instead of Deep Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Ferocious Green is warmer than Deep Green.

Can I use Deep Green instead of Ferocious Green?

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