Green Sky vs Ogryn Camo

How close are they?

ΔE 18.4, loose: different enough that you should pick on purpose. Ogryn Camo is a little darker, more saturated, warmer than Green Sky.

Can I use Ogryn Camo instead of Green Sky?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Ogryn Camo is a little darker, more saturated, warmer than Green Sky.

Can I use Green Sky instead of Ogryn Camo?

The same difference applies the other way round: Green Sky is a little lighter, more muted, 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.