Thornwood Green vs Stone Grey

How close are they?

ΔE 12.5, fair: the same colour family, but not a straight swap. Stone Grey is noticeably lighter, more muted, warmer than Thornwood Green.

Can I use Stone Grey instead of Thornwood Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Stone Grey is noticeably lighter, more muted, warmer than Thornwood Green.

Can I use Thornwood Green instead of Stone Grey?

The same difference applies the other way round: Thornwood Green is noticeably darker, more saturated, 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.