ΔE 11.8, fair: the same colour family, but not a straight swap. Mortarion Green Clear is a little lighter, more muted than Orc Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Mortarion Green Clear is a little lighter, more muted than Orc Green.
The same difference applies the other way round: Orc Green is a little darker, more saturated.
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 Orc Green on the colour wheel See Mortarion Green Clear on the colour wheel
All matches: Orc Green equivalents · Mortarion Green Clear equivalents