A very deep reddish lilac colour, but I think purple is stretching it a bit. It may deepen in colour as the clump establishes (in the way that pigs may fly!)
22nd April 2007
14th April 2009
6th April 2012
18th April 2015
References:
Barker, David G. - Epimedium and other herbaceous Berberidaceae, Hardy Plant Society, 1997