ΔE 7.5, close: similar, with a visible difference side by side. Dark Red is a little lighter, more muted than Doombull Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dark Red is a little lighter, more muted than Doombull Brown.
The same difference applies the other way round: Doombull Brown is a little darker, more saturated.
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 Doombull Brown on the colour wheel See Dark Red on the colour wheel
All matches: Doombull Brown equivalents · Dark Red equivalents