ΔE 15.4, loose: different enough that you should pick on purpose. Deck Grey is a little lighter, more muted, cooler than Tanned Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Deck Grey is a little lighter, more muted, cooler than Tanned Skin.
The same difference applies the other way round: Tanned Skin is a little darker, 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.
See Tanned Skin on the colour wheel See Deck Grey on the colour wheel
All matches: Tanned Skin equivalents · Deck Grey equivalents