ΔE 9.2, close: similar, with a visible difference side by side. Transparent Brown Iron Oxide is a little lighter, more saturated than Tallarn Sand. They are different kinds of paint: Citadel Tallarn 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.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Transparent Brown Iron Oxide is a little lighter, more saturated than Tallarn Sand. They are different kinds of paint.
The same difference applies the other way round: Tallarn Sand is a little darker, more muted.
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 Tallarn Sand on the colour wheel See Transparent Brown Iron Oxide on the colour wheel
All matches: Tallarn Sand equivalents · Transparent Brown Iron Oxide equivalents