Green Uniform Base vs Refractive Green

How close are they?

ΔE 9.1, close: similar, with a visible difference side by side. Refractive Green is a little lighter, more muted than Green Uniform Base.

Can I use Refractive Green instead of Green Uniform Base?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Refractive Green is a little lighter, more muted than Green Uniform Base.

Can I use Green Uniform Base instead of Refractive Green?

The same difference applies the other way round: Green Uniform Base is a little darker, more saturated.

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.