Well, there is no pure color in properly-formatted PBR color maps. And tone mappers can only do great with good inputs. White paint for example should be no brighter than 240 or so. Snow is the brightest at about 243. A lemon peel is around 220,185,0.
I found the node in Designer that makes safe colors from input . While how it behaves on whites is perfectly what I expected , its clipping on dark end seems a bit too extreme for me. Nothing looks kind of enough black with this in our game. Especially some artificial materials of black nature. Always a bit washed out.…