Violent Vermillion vs Medium Flesh

How close are they?

ΔE 7.5, close: similar, with a visible difference side by side. Medium Flesh is a little lighter than Violent Vermillion.

Can I use Medium Flesh instead of Violent Vermillion?

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

Can I use Violent Vermillion instead of Medium Flesh?

The same difference applies the other way round: Violent Vermillion 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.