ΔE 10.8, fair: the same colour family, but not a straight swap. Tanned Leather is more muted, warmer than Tallarn Sand.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Tanned Leather is more muted, warmer than Tallarn Sand.
The same difference applies the other way round: Tallarn Sand 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 Tallarn Sand on the colour wheel See Tanned Leather on the colour wheel
All matches: Tallarn Sand equivalents · Tanned Leather equivalents