Worn Stone vs Temple Stone

How close are they?

ΔE 15.7, loose: different enough that you should pick on purpose. Temple Stone is noticeably darker, warmer than Worn Stone.

Can I use Temple Stone instead of Worn Stone?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Temple Stone is noticeably darker, warmer than Worn Stone.

Can I use Worn Stone instead of Temple Stone?

The same difference applies the other way round: Worn Stone is noticeably lighter, cooler.

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.