ΔE 9.0, close: similar, with a visible difference side by side. Wooden Deck Tan is a little darker, more saturated than Stone Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Wooden Deck Tan is a little darker, more saturated than Stone Grey.
The same difference applies the other way round: Stone Grey is a little lighter, 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.
See Stone Grey on the colour wheel See Wooden Deck Tan on the colour wheel
All matches: Stone Grey equivalents · Wooden Deck Tan equivalents