ΔE 10.8, fair: the same colour family, but not a straight swap. Pale Grey Blue is a little lighter than Combat Fatigues.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Pale Grey Blue is a little lighter than Combat Fatigues.
The same difference applies the other way round: Combat Fatigues is a little darker.
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 Combat Fatigues on the colour wheel See Pale Grey Blue on the colour wheel
All matches: Combat Fatigues equivalents · Pale Grey Blue equivalents