Cobalt Green vs Splinter Green

How close are they?

ΔE 8.7, close: similar, with a visible difference side by side. Splinter Green is a little lighter, warmer than Cobalt Green.

Can I use Splinter Green instead of Cobalt Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Splinter Green is a little lighter, warmer than Cobalt Green.

Can I use Cobalt Green instead of Splinter Green?

The same difference applies the other way round: Cobalt Green is a little darker, 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.