ΔE 14.5, fair: the same colour family, but not a straight swap. Straken Green is much more saturated than Olive Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Straken Green is much more saturated than Olive Green.
The same difference applies the other way round: Olive Green 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.
See Olive Green on the colour wheel See Straken Green on the colour wheel
All matches: Olive Green equivalents · Straken Green equivalents