ΔE 10.8, fair: the same colour family, but not a straight swap. Tan Earth is a little lighter, more muted than Denison Tan Base.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Tan Earth is a little lighter, more muted than Denison Tan Base.
The same difference applies the other way round: Denison Tan Base is a little darker, more saturated.
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 Denison Tan Base on the colour wheel See Tan Earth on the colour wheel
All matches: Denison Tan Base equivalents · Tan Earth equivalents