ΔE 10.1, fair: the same colour family, but not a straight swap. Caliban Green is a little lighter, more saturated, cooler than Medium Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Caliban Green is a little lighter, more saturated, cooler than Medium Green.
The same difference applies the other way round: Medium Green is a little darker, 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.
See Medium Green on the colour wheel See Caliban Green on the colour wheel
All matches: Medium Green equivalents · Caliban Green equivalents