ΔE 10.1, fair: the same colour family, but not a straight swap. Tallarn Sand is a little darker, warmer than Summer Soil.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Tallarn Sand is a little darker, warmer than Summer Soil.
The same difference applies the other way round: Summer Soil is a little lighter, 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 Summer Soil on the colour wheel See Tallarn Sand on the colour wheel
All matches: Summer Soil equivalents · Tallarn Sand equivalents