Bulbs from #PhilipsHue are definitely the worst when it comes down to pairing.
Wanted to re-pair an old Hue bulb because I never brought in into #HomeAssistant and forgot about it.
Official instructions? 5 times on and off for 5 seconds each. When it worked the bulb blinks.
This is successful pretty often, but not every time. I sat there for 5 Minutes and turned this thing on 5 seconds, off 5 seconds, on 5 seconds, off 5 seconds, on 5 seconds, off 5 seconds… Nothing. It's so annoying.
But there's a second way: "Buy more hardware from Philips. The dimmer switch can bring a bulb into pairing mode too! Maybe… But please buy it!"
I'm about to drive to IKEA to buy a Tradfri bulb and live with the slight difference in color.