ΔE 5.6, very close: most people won’t see a difference side by side. IJA Earth Brown is more saturated, cooler than Ancient Forest.
Yes, for most jobs. Very close match (ΔE 6). IJA Earth Brown is more saturated, cooler than Ancient Forest.
The same difference applies the other way round: Ancient Forest is more muted, 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 Ancient Forest on the colour wheel See IJA Earth Brown on the colour wheel
All matches: Ancient Forest equivalents · IJA Earth Brown equivalents