Gray FS36231 vs Pacific Green

How close are they?

ΔE 7.2, close: similar, with a visible difference side by side. Pacific Green is a little darker, more saturated, cooler than Gray FS36231.

Can I use Pacific Green instead of Gray FS36231?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Pacific Green is a little darker, more saturated, cooler than Gray FS36231.

Can I use Gray FS36231 instead of Pacific Green?

The same difference applies the other way round: Gray FS36231 is a little lighter, more muted, warmer.

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.