ΔE 17.6, loose: different enough that you should pick on purpose. Yellow Sand is noticeably lighter, more muted, cooler than Tallarn Sand.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Yellow Sand is noticeably lighter, more muted, cooler than Tallarn Sand.
The same difference applies the other way round: Tallarn Sand is noticeably darker, more saturated, warmer.
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 Yellow Sand on the colour wheel
All matches: Tallarn Sand equivalents · Yellow Sand equivalents