ΔE 9.2, close: similar, with a visible difference side by side. Orruk Flesh is a little darker, more muted than Mortarion Green Clear.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Orruk Flesh is a little darker, more muted than Mortarion Green Clear.
The same difference applies the other way round: Mortarion Green Clear is a little lighter, 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 Mortarion Green Clear on the colour wheel See Orruk Flesh on the colour wheel
All matches: Mortarion Green Clear equivalents · Orruk Flesh equivalents