Light DAK Sand vs Karak Stone

How close are they?

ΔE 15.8, loose: different enough that you should pick on purpose. Karak Stone is noticeably darker, more muted, cooler than Light DAK Sand.

Can I use Karak Stone instead of Light DAK Sand?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Karak Stone is noticeably darker, more muted, cooler than Light DAK Sand.

Can I use Light DAK Sand instead of Karak Stone?

The same difference applies the other way round: Light DAK Sand is noticeably lighter, 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.