Is it normal for such a dark black eye after fillers? (Photos)

Perhaps the most vascular area of the face is the area beneath the eye.  I use microcannulas for injection of filler beneath the eye as it significantly reduces the incidence of bruising.  However, even with the use of cannulas I tell my patients that all injections have the potential for bruising.  The discoloration will resolve.  Be patient but make up will easily camouflage that bruise until it resolves.  

Swelling and bruising is common after dermal fillers. The tear trough area is a very delicate area. I use a micro-cannula in my practice to decrease chances of bruising. Best of luck, Dr. Nima!

Hi Pixie.Yes. It's called a bruise. It is a risk of injections with sharp needles and this gets better in 7 to 10 days. Arnica cream  massage might speed up the healing process.
Good luck. Dr. ALDO 

This appears to be typical bruising from injections under the eye.  I recommend following up with your injector and requesting that he/she uses a cannula (instead of a needle) next time to reduce the risk of bruising.  

Perhaps the most vascular area of the face is the area beneath the eye.  I use microcannulas for injection of filler beneath the eye as it significantly reduces the incidence of bruising.  However, even with the use of cannulas I tell my patients that all injections have the potential for bruising.  The discoloration will resolve.  Be patient but make up will easily camouflage that bruise until it resolves.