ΔE 13.8, fair: the same colour family, but not a straight swap. Eidolon Purple Clear is much more saturated than Deep Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Eidolon Purple Clear is much more saturated than Deep Purple.
The same difference applies the other way round: Deep Purple is much more muted.
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 Deep Purple on the colour wheel See Eidolon Purple Clear on the colour wheel
All matches: Deep Purple equivalents · Eidolon Purple Clear equivalents