ΔE 9.7, close: similar, with a visible difference side by side. Ruddy Terra is a little darker, more saturated than Human Flesh.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Ruddy Terra is a little darker, more saturated than Human Flesh.
The same difference applies the other way round: Human Flesh is a little lighter, 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 Human Flesh on the colour wheel See Ruddy Terra on the colour wheel
All matches: Human Flesh equivalents · Ruddy Terra equivalents