ΔE 5.9, very close: most people won’t see a difference side by side. Transparent Brown is more muted, warmer than Mid Brown. They are different kinds of paint: Army Painter Mid Brown is a wash/shade and Pro Acryl Transparent Brown is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 6). Transparent Brown is more muted, warmer than Mid Brown. They are different kinds of paint.
The same difference applies the other way round: Mid Brown is more saturated, 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 Mid Brown on the colour wheel See Transparent Brown on the colour wheel
All matches: Mid Brown equivalents · Transparent Brown equivalents