ΔE 8.1, close: similar, with a visible difference side by side. Cam. Med. Brown is a little lighter, more saturated than Grey Liner.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Cam. Med. Brown is a little lighter, more saturated than Grey Liner.
The same difference applies the other way round: Grey Liner is a little darker, 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 Grey Liner on the colour wheel See Cam. Med. Brown on the colour wheel
All matches: Grey Liner equivalents · Cam. Med. Brown equivalents