[NAME]  Yes. Due to the negotiation that occurs as part of the USB PD spec, a power source won’t supply a power level that the device can’t handle, nor will a device draw more power than the power source is designed to provide. So you won’t break anything. I have a 90W USB-C charger that I use with phones, tablets, VR headsets, power banks and laptops — most of which have no need for 90W.
I needed to add a usb-c hub to my xps 13 to gain ports.  The hub uses 9W of power.  My Dell uses 45 watts, so the charger causes a warning msg on startup.  Can I add a 60W charger without causing harm to my laptop?  The Dell charger supplies 45W, not enough to power the laptop and hub.  TIA
XPS13 charger