ΔE 9.3, close: similar, with a visible difference side by side. Granite Stone is a little darker, more muted than Pallid Wych Flesh.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Granite Stone is a little darker, more muted than Pallid Wych Flesh.
The same difference applies the other way round: Pallid Wych Flesh 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 Pallid Wych Flesh on the colour wheel See Granite Stone on the colour wheel
All matches: Pallid Wych Flesh equivalents · Granite Stone equivalents