ΔE 14.3, fair: the same colour family, but not a straight swap. Camouflage Green is much more saturated than Dark Yellow.
Can I use Camouflage Green instead of Dark Yellow?
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Camouflage Green is much more saturated than Dark Yellow.
Can I use Dark Yellow instead of Camouflage Green?
The same difference applies the other way round: Dark Yellow is much more muted.
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.