Vulkan Green vs Pine Green

How close are they?

ΔE 6.2, close: similar, with a visible difference side by side. Pine Green is a little darker, more saturated than Vulkan Green.

Can I use Pine Green instead of Vulkan Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Pine Green is a little darker, more saturated than Vulkan Green.

Can I use Vulkan Green instead of Pine Green?

The same difference applies the other way round: Vulkan Green is a little lighter, 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.