Necro Grey vs Blue Grey

How close are they?

ΔE 5.8, very close: most people won’t see a difference side by side. Blue Grey is a little lighter, more saturated than Necro Grey.

Can I use Blue Grey instead of Necro Grey?

Yes, for most jobs. Very close match (ΔE 6). Blue Grey is a little lighter, more saturated than Necro Grey.

Can I use Necro Grey instead of Blue Grey?

The same difference applies the other way round: Necro Grey is a little darker, more muted.

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.