Fenrisian Grey vs Sapphire Blue

How close are they?

ΔE 5.9, very close: most people won’t see a difference side by side. Sapphire Blue is a little darker, cooler than Fenrisian Grey. They are different kinds of paint: Citadel Fenrisian Grey is an opaque base/layer paint and Green Stuff World Sapphire Blue is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Sapphire Blue instead of Fenrisian Grey?

Yes, for most jobs. Very close match (ΔE 6). Sapphire Blue is a little darker, cooler than Fenrisian Grey. They are different kinds of paint.

Can I use Fenrisian Grey instead of Sapphire Blue?

The same difference applies the other way round: Fenrisian Grey is a little lighter, 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.