Pale Yellow Green FS-33481 vs Karak Stone

How close are they?

ΔE 8.4, close: similar, with a visible difference side by side. Karak Stone is a little lighter, more saturated than Pale Yellow Green FS-33481.

Can I use Karak Stone instead of Pale Yellow Green FS-33481?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Karak Stone is a little lighter, more saturated than Pale Yellow Green FS-33481.

Can I use Pale Yellow Green FS-33481 instead of Karak Stone?

The same difference applies the other way round: Pale Yellow Green FS-33481 is a little darker, more muted.

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.