ΔE 11.0, fair: the same colour family, but not a straight swap. Caliban Green is a little darker, more muted, cooler than Zinc Chromate Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Caliban Green is a little darker, more muted, cooler than Zinc Chromate Green.
The same difference applies the other way round: Zinc Chromate Green is a little lighter, more saturated, 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 Zinc Chromate Green on the colour wheel See Caliban Green on the colour wheel
All matches: Zinc Chromate Green equivalents · Caliban Green equivalents