ΔE 13.7, fair: the same colour family, but not a straight swap. Monastic Green is much more saturated, warmer than Basilisk Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Monastic Green is much more saturated, warmer than Basilisk Green.
The same difference applies the other way round: Basilisk Green is much more muted, 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.
See Basilisk Green on the colour wheel See Monastic Green on the colour wheel
All matches: Basilisk Green equivalents · Monastic Green equivalents