Temple Gate Teal vs Light Green

How close are they?

ΔE 8.6, close: similar, with a visible difference side by side. Light Green is a little lighter than Temple Gate Teal.

Can I use Light Green instead of Temple Gate Teal?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Light Green is a little lighter than Temple Gate Teal.

Can I use Temple Gate Teal instead of Light Green?

The same difference applies the other way round: Temple Gate Teal is a little darker.

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.