Graphite Grey vs Landser Grey

How close are they?

ΔE 9.0, close: similar, with a visible difference side by side. Landser Grey is a little darker than Graphite Grey.

Can I use Landser Grey instead of Graphite Grey?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Landser Grey is a little darker than Graphite Grey.

Can I use Graphite Grey instead of Landser Grey?

The same difference applies the other way round: Graphite Grey is a little lighter.

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.