Dark Turquoise vs Stegadon Scale Green

How close are they?

ΔE 8.6, close: similar, with a visible difference side by side. Stegadon Scale Green is warmer than Dark Turquoise.

Can I use Stegadon Scale Green instead of Dark Turquoise?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Stegadon Scale Green is warmer than Dark Turquoise.

Can I use Dark Turquoise instead of Stegadon Scale Green?

The same difference applies the other way round: Dark Turquoise is 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.