ΔE 10.1, fair: the same colour family, but not a straight swap. Light DAK Sand is a little lighter, more muted, cooler than RLM 79 (1941).
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Light DAK Sand is a little lighter, more muted, cooler than RLM 79 (1941).
The same difference applies the other way round: RLM 79 (1941) is a little darker, more saturated, 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 RLM 79 (1941) on the colour wheel See Light DAK Sand on the colour wheel
All matches: RLM 79 (1941) equivalents · Light DAK Sand equivalents