Runic Grey vs Grey Spell

How close are they?

ΔE 12.9, fair: the same colour family, but not a straight swap. Grey Spell is a little lighter, warmer than Runic Grey.

Can I use Grey Spell instead of Runic Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Grey Spell is a little lighter, warmer than Runic Grey.

Can I use Runic Grey instead of Grey Spell?

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