ΔE 12.4, fair: the same colour family, but not a straight swap. Cobalt Green is cooler than Athonian Camoshade. They are different kinds of paint: Citadel Athonian Camoshade is a wash/shade and Golden Cobalt Green is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Cobalt Green is cooler than Athonian Camoshade. They are different kinds of paint.
The same difference applies the other way round: Athonian Camoshade is 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 Athonian Camoshade on the colour wheel See Cobalt Green on the colour wheel
All matches: Athonian Camoshade equivalents · Cobalt Green equivalents