Bastion Grey vs Grey RLM02

How close are they?

ΔE 5.6, very close: most people won’t see a difference side by side. Grey RLM02 is a little darker, more muted than Bastion Grey.

Can I use Grey RLM02 instead of Bastion Grey?

Yes, for most jobs. Very close match (ΔE 6). Grey RLM02 is a little darker, more muted than Bastion Grey.

Can I use Bastion Grey instead of Grey RLM02?

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

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.