ΔE 2.3, very close: most people won’t see a difference side by side. Dark Boot Brown is cooler than Khaki green No.3.
Yes, for most jobs. Very close match (ΔE 2). Dark Boot Brown is cooler than Khaki green No.3.
The same difference applies the other way round: Khaki green No.3 is 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 Khaki green No.3 on the colour wheel See Dark Boot Brown on the colour wheel
All matches: Khaki green No.3 equivalents · Dark Boot Brown equivalents