ΔE 6.9, close: similar, with a visible difference side by side. Pale Flesh is more muted, warmer than Buff.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Pale Flesh is more muted, warmer than Buff.
The same difference applies the other way round: Buff is more saturated, cooler.
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 Buff on the colour wheel See Pale Flesh on the colour wheel
All matches: Buff equivalents · Pale Flesh equivalents