Bordeaux Red vs Knight-Questor Flesh

How close are they?

ΔE 7.3, close: similar, with a visible difference side by side. Knight-Questor Flesh is a little darker, warmer than Bordeaux Red.

Can I use Knight-Questor Flesh instead of Bordeaux Red?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Knight-Questor Flesh is a little darker, warmer than Bordeaux Red.

Can I use Bordeaux Red instead of Knight-Questor Flesh?

The same difference applies the other way round: Bordeaux Red is a little lighter, 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.