Sandy Brown vs Middle Stone

How close are they?

ΔE 7.7, close: similar, with a visible difference side by side. Middle Stone is a little darker, more muted, cooler than Sandy Brown.

Can I use Middle Stone instead of Sandy Brown?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Middle Stone is a little darker, more muted, cooler than Sandy Brown.

Can I use Sandy Brown instead of Middle Stone?

The same difference applies the other way round: Sandy Brown is a little 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.