ΔE 10.1, fair: the same colour family, but not a straight swap. Transparent Brown Iron Oxide is more saturated, warmer than Mid DAK Sand. They are different kinds of paint: Army Painter Mid DAK Sand is an opaque base/layer paint and Golden Transparent Brown Iron Oxide is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Transparent Brown Iron Oxide is more saturated, warmer than Mid DAK Sand. They are different kinds of paint.
The same difference applies the other way round: Mid DAK Sand 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.
See Mid DAK Sand on the colour wheel See Transparent Brown Iron Oxide on the colour wheel
All matches: Mid DAK Sand equivalents · Transparent Brown Iron Oxide equivalents