Dawnstone vs Light Grey RLM63

How close are they?

ΔE 5.9, very close: most people won’t see a difference side by side. Light Grey RLM63 is a little darker, more saturated than Dawnstone.

Can I use Light Grey RLM63 instead of Dawnstone?

Yes, for most jobs. Very close match (ΔE 6). Light Grey RLM63 is a little darker, more saturated than Dawnstone.

Can I use Dawnstone instead of Light Grey RLM63?

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