ΔE 9.1, close: similar, with a visible difference side by side. Cobalt Turquois is a little darker, cooler than Stegadon Scale Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Cobalt Turquois is a little darker, cooler than Stegadon Scale Green.
The same difference applies the other way round: Stegadon Scale Green is a little lighter, warmer.
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.
See Stegadon Scale Green on the colour wheel See Cobalt Turquois on the colour wheel
All matches: Stegadon Scale Green equivalents · Cobalt Turquois equivalents