Autumn Sage vs Interior Grey Green

How close are they?

ΔE 11.4, fair: the same colour family, but not a straight swap. Interior Grey Green is a little darker, more muted, warmer than Autumn Sage.

Can I use Interior Grey Green instead of Autumn Sage?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Interior Grey Green is a little darker, more muted, warmer than Autumn Sage.

Can I use Autumn Sage instead of Interior Grey Green?

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