ΔE 8.4, close: similar, with a visible difference side by side. Light Turquoise is a little darker, warmer than Temple Guard Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Light Turquoise is a little darker, warmer than Temple Guard Blue.
The same difference applies the other way round: Temple Guard Blue is a little lighter, 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.
See Temple Guard Blue on the colour wheel See Light Turquoise on the colour wheel
All matches: Temple Guard Blue equivalents · Light Turquoise equivalents