Yellow Dune vs Rucksack Tan

How close are they?

ΔE 12.9, fair: the same colour family, but not a straight swap. Rucksack Tan is a little darker, cooler than Yellow Dune.

Can I use Rucksack Tan instead of Yellow Dune?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Rucksack Tan is a little darker, cooler than Yellow Dune.

Can I use Yellow Dune instead of Rucksack Tan?

The same difference applies the other way round: Yellow Dune is a little lighter, 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.