ΔE 13.1, fair: the same colour family, but not a straight swap. Chromium Oxide Green Dark is noticeably lighter, warmer than Caliban Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Chromium Oxide Green Dark is noticeably lighter, warmer than Caliban Green.
The same difference applies the other way round: Caliban Green is noticeably darker, 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 Caliban Green on the colour wheel See Chromium Oxide Green Dark on the colour wheel
All matches: Caliban Green equivalents · Chromium Oxide Green Dark equivalents