Poxwalker vs Orc Flesh Wash

How close are they?

ΔE 21.8, loose: different enough that you should pick on purpose. Orc Flesh Wash is much more muted, cooler than Poxwalker.

Can I use Orc Flesh Wash instead of Poxwalker?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Orc Flesh Wash is much more muted, cooler than Poxwalker.

Can I use Poxwalker instead of Orc Flesh Wash?

The same difference applies the other way round: Poxwalker is much more saturated, warmer.

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.