ΔE 10.9, fair: the same colour family, but not a straight swap. Sons of Horus Green is a little darker, more saturated, cooler than Exile Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Sons of Horus Green is a little darker, more saturated, cooler than Exile Green.
The same difference applies the other way round: Exile Green is a little lighter, more muted, 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 Exile Green on the colour wheel See Sons of Horus Green on the colour wheel
All matches: Exile Green equivalents · Sons of Horus Green equivalents