ΔE 8.5, close: similar, with a visible difference side by side. Quicksand Brown is a little darker, more muted than Skrag Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Quicksand Brown is a little darker, more muted than Skrag Brown.
The same difference applies the other way round: Skrag Brown 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 Skrag Brown on the colour wheel See Quicksand Brown on the colour wheel
All matches: Skrag Brown equivalents · Quicksand Brown equivalents