Light Sand FS-33727 vs Gargoyle Grey

How close are they?

ΔE 9.0, close: similar, with a visible difference side by side. Gargoyle Grey is a little lighter, more muted, cooler than Light Sand FS-33727.

Can I use Gargoyle Grey instead of Light Sand FS-33727?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Gargoyle Grey is a little lighter, more muted, cooler than Light Sand FS-33727.

Can I use Light Sand FS-33727 instead of Gargoyle Grey?

The same difference applies the other way round: Light Sand FS-33727 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.