ΔE 11.5, fair: the same colour family, but not a straight swap. Olive Green RLM80 is a little lighter, more saturated than Dark Neutral Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Olive Green RLM80 is a little lighter, more saturated than Dark Neutral Grey.
The same difference applies the other way round: Dark Neutral Grey is a little darker, 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.
See Dark Neutral Grey on the colour wheel See Olive Green RLM80 on the colour wheel
All matches: Dark Neutral Grey equivalents · Olive Green RLM80 equivalents