ΔE 6.9, close: similar, with a visible difference side by side. Pale Sand is a little lighter, warmer than Bright Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Pale Sand is a little lighter, warmer than Bright Green.
The same difference applies the other way round: Bright Green is a little darker, 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 Bright Green on the colour wheel See Pale Sand on the colour wheel
All matches: Bright Green equivalents · Pale Sand equivalents