It is not given a value on the official spec list nor on other test/review sites. Full Array or commonly known as Local Dimming is something I think you should consider for yourself.
Much more important would be the colour depth and the colour format, as well as Freesync and the refresh rate, 10bit colour depth would be here.
In any case, the TV has absolute top colour values and burns the retina off your eyes at full contrast!
I play a lot of Ps4 and occasionally watch UHD films via NAS. Never had a TV with such clear, fantastic colours! Incredible for watching films or gaming.
It has to be said that I am actually a PC user and am used to HDR 12bit RGB, Gsync and top panels.