ΔE 6.8, close: similar, with a visible difference side by side. Desert Tan is warmer than Hammerfall Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Desert Tan is warmer than Hammerfall Khaki.
The same difference applies the other way round: Hammerfall Khaki 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 Hammerfall Khaki on the colour wheel See Desert Tan on the colour wheel
All matches: Hammerfall Khaki equivalents · Desert Tan equivalents