Dark Green vs Caliban Green

How close are they?

ΔE 13.9, fair: the same colour family, but not a straight swap. Caliban Green is more saturated, cooler than Dark Green.

Can I use Caliban Green instead of Dark Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Caliban Green is more saturated, cooler than Dark Green.

Can I use Dark Green instead of Caliban Green?

The same difference applies the other way round: Dark Green is more muted, 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.