Light Gray Green vs Scaly Hide

How close are they?

ΔE 7.1, close: similar, with a visible difference side by side. Scaly Hide is more muted than Light Gray Green.

Can I use Scaly Hide instead of Light Gray Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Scaly Hide is more muted than Light Gray Green.

Can I use Light Gray Green instead of Scaly Hide?

The same difference applies the other way round: Light Gray Green is more saturated.

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.