Oxford Blue vs Warpfiend Grey

How close are they?

ΔE 9.9, close: similar, with a visible difference side by side. Warpfiend Grey is a little lighter, more saturated, warmer than Oxford Blue.

Can I use Warpfiend Grey instead of Oxford Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Warpfiend Grey is a little lighter, more saturated, warmer than Oxford Blue.

Can I use Oxford Blue instead of Warpfiend Grey?

The same difference applies the other way round: Oxford Blue is a little darker, 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.