ΔE 11.4, fair: the same colour family, but not a straight swap. Van Dyke Brown Hue is a little darker, more saturated than Tree Ancient.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Van Dyke Brown Hue is a little darker, more saturated than Tree Ancient.
The same difference applies the other way round: Tree Ancient is a little lighter, 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 Tree Ancient on the colour wheel See Van Dyke Brown Hue on the colour wheel
All matches: Tree Ancient equivalents · Van Dyke Brown Hue equivalents