Death Guard Green vs Aircraft Gray Green BS283

How close are they?

ΔE 16.8, loose: different enough that you should pick on purpose. Aircraft Gray Green BS283 is a little lighter, much more muted, cooler than Death Guard Green.

Can I use Aircraft Gray Green BS283 instead of Death Guard Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Aircraft Gray Green BS283 is a little lighter, much more muted, cooler than Death Guard Green.

Can I use Death Guard Green instead of Aircraft Gray Green BS283?

The same difference applies the other way round: Death Guard Green is a little darker, much 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.