ΔE 6.9, close: similar, with a visible difference side by side. Charred Brown is a little darker, warmer than Dread Red.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Charred Brown is a little darker, warmer than Dread Red.
The same difference applies the other way round: Dread 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.
See Dread Red on the colour wheel See Charred Brown on the colour wheel
All matches: Dread Red equivalents · Charred Brown equivalents