While you previously had to take a diversion via the Siri shortcuts and had to make noticeable compromises in terms of design, native widgets have finally been available in the Philips Hue app since the update to version 5.14. This allows you to activate scenes from the home screen or lock screen and switch entire rooms or zones on and off.
How to install Philips Hue widgets on the iPhone A step-by-step guide
A step-by-step guide