I said calculate it, because if you only keep records of WB and RH, you can use them to know what it was in those years that you didn‘t track DB..
I don’t believe there is one set range of RH for everyone.
If in the heating season, you wake up in the morning, and your throat is dry and scratchy. Your RH is too low for you. And that is unhealthy.
Same way, if you wake up and your sweating, its to high, or the temp is too high for the RH.
If you set your humidistat at a setting that both keeps the dust down, and your throat from drying out. Plus your not condensing or frosting up your windows. That’s the RH that is probably best for you, and your home.