Sons of Horus Green vs Green Oxide

How close are they?

ΔE 6.4, close: similar, with a visible difference side by side. Green Oxide is a little lighter than Sons of Horus Green.

Can I use Green Oxide instead of Sons of Horus Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Green Oxide is a little lighter than Sons of Horus Green.

Can I use Sons of Horus Green instead of Green Oxide?

The same difference applies the other way round: Sons of Horus Green is a little darker.

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.