ΔE 6.7, close: similar, with a visible difference side by side. IJA Khaki Brown is warmer than Tundra Taupe.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). IJA Khaki Brown is warmer than Tundra Taupe.
The same difference applies the other way round: Tundra Taupe is 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 Tundra Taupe on the colour wheel See IJA Khaki Brown on the colour wheel
All matches: Tundra Taupe equivalents · IJA Khaki Brown equivalents