Nº1 Light Green (FS34151) vs Drab Green

How close are they?

ΔE 7.6, close: similar, with a visible difference side by side. Drab Green is a little lighter, more saturated than Nº1 Light Green (FS34151).

Can I use Drab Green instead of Nº1 Light Green (FS34151)?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Drab Green is a little lighter, more saturated than Nº1 Light Green (FS34151).

Can I use Nº1 Light Green (FS34151) instead of Drab Green?

The same difference applies the other way round: Nº1 Light Green (FS34151) 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.