Bloodreaver Flesh vs Red Oxide

How close are they?

ΔE 9.7, close: similar, with a visible difference side by side. Red Oxide is more saturated than Bloodreaver Flesh.

Can I use Red Oxide instead of Bloodreaver Flesh?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Red Oxide is more saturated than Bloodreaver Flesh.

Can I use Bloodreaver Flesh instead of Red Oxide?

The same difference applies the other way round: Bloodreaver Flesh is 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.