ΔE 6.8, close: similar, with a visible difference side by side. Carthalos Skin is a little darker, more saturated than Rifle Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Carthalos Skin is a little darker, more saturated than Rifle Brown.
The same difference applies the other way round: Rifle Brown 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 Rifle Brown on the colour wheel See Carthalos Skin on the colour wheel
All matches: Rifle Brown equivalents · Carthalos Skin equivalents