ΔE 13.9, fair: the same colour family, but not a straight swap. Light Emerald is more muted, cooler than Viridian Green Hue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Light Emerald is more muted, cooler than Viridian Green Hue.
The same difference applies the other way round: Viridian Green Hue is more saturated, 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 Viridian Green Hue on the colour wheel See Light Emerald on the colour wheel
All matches: Viridian Green Hue equivalents · Light Emerald equivalents