Lamy Dark Lilac (LDL) was the Special Edition Lamy fountain Pen's accompanying ink for 2016. It's an ink that became very popular very quickly and for good reason; it's a beautiful deep dark magenta-leaning purple with bright gold sheen and great shading. Unfortunately it was a limited run and it is now very difficult to find the ink new (the pen seems, as of this writing, to be easier to find). I saw the ink going for around US$60 on eBay not too long ago. This is a pretty high price so people have been understandably looking for an alternative to the ink. I've been buying purple inks (in bottle and sample form) for the purpose of finding an ink that close to Lamy Dark Lilac. Unfortunately there is no dupe; I've found no ink that's a straight copy. There are, however, some alternatives that depending on your preference might be good enough.