Burnt Red vs WWI French Brown

How close are they?

ΔE 6.2, close: similar, with a visible difference side by side. WWI French Brown is more saturated, warmer than Burnt Red.

Can I use WWI French Brown instead of Burnt Red?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). WWI French Brown is more saturated, warmer than Burnt Red.

Can I use Burnt Red instead of WWI French Brown?

The same difference applies the other way round: Burnt Red is more muted, 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.