Zandri Dust vs Rucksack Tan

How close are they?

ΔE 17.2, loose: different enough that you should pick on purpose. Rucksack Tan is much more saturated, cooler than Zandri Dust.

Can I use Rucksack Tan instead of Zandri Dust?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Rucksack Tan is much more saturated, cooler than Zandri Dust.

Can I use Zandri Dust instead of Rucksack Tan?

The same difference applies the other way round: Zandri Dust is much more muted, 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.