Titan Green Pale vs White Grey

How close are they?

ΔE 6.2, close: similar, with a visible difference side by side. White Grey is more muted, warmer than Titan Green Pale.

Can I use White Grey instead of Titan Green Pale?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). White Grey is more muted, warmer than Titan Green Pale.

Can I use Titan Green Pale instead of White Grey?

The same difference applies the other way round: Titan Green Pale is 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.