Sinai Grey vs Greatcoat Green

How close are they?

ΔE 10.3, fair: the same colour family, but not a straight swap. Greatcoat Green is a little lighter, more saturated than Sinai Grey.

Can I use Greatcoat Green instead of Sinai Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Greatcoat Green is a little lighter, more saturated than Sinai Grey.

Can I use Sinai Grey instead of Greatcoat Green?

The same difference applies the other way round: Sinai 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.