ΔE 14.8, fair: the same colour family, but not a straight swap. Let Them Eat Cake is a little darker, much more muted than Elven Armour.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Let Them Eat Cake is a little darker, much more muted than Elven Armour.
The same difference applies the other way round: Elven Armour is a little lighter, much more saturated.
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 Elven Armour on the colour wheel See Let Them Eat Cake on the colour wheel
All matches: Elven Armour equivalents · Let Them Eat Cake equivalents