ΔE 7.6, close: similar, with a visible difference side by side. Cocoa Brown is a little darker, more saturated than Carnelian Skin.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Cocoa Brown is a little darker, more saturated than Carnelian Skin.
The same difference applies the other way round: Carnelian Skin 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 Carnelian Skin on the colour wheel See Cocoa Brown on the colour wheel
All matches: Carnelian Skin equivalents · Cocoa Brown equivalents