ΔE 8.6, close: similar, with a visible difference side by side. Light Blue is a little lighter, cooler than Worn Stone.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Light Blue is a little lighter, cooler than Worn Stone.
The same difference applies the other way round: Worn Stone is a little darker, 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.
See Worn Stone on the colour wheel See Light Blue on the colour wheel
All matches: Worn Stone equivalents · Light Blue equivalents