Dwarf Flesh vs Violent Vermillion

How close are they?

ΔE 7.9, close: similar, with a visible difference side by side. Violent Vermillion is a little lighter than Dwarf Flesh.

Can I use Violent Vermillion instead of Dwarf Flesh?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Violent Vermillion is a little lighter than Dwarf Flesh.

Can I use Dwarf Flesh instead of Violent Vermillion?

The same difference applies the other way round: Dwarf Flesh is a little darker.

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.