LIFX SuperColor A19 (1100 lm)

LIFX SuperColor is the simplest way to get a scheduled circadian bulb without a hub. It connects straight to 2.4 GHz Wi-Fi, is Matter certified, and a schedule in the LIFX app can move it from cool daylight to warm 1500K light through the day. Because it is a full-colour bulb, it can also go to red for the last hour before bed, which a white-only bulb cannot.

The specs that matter for evenings are reasonable: a warm end of 1500K and dimming down to 1%. Hue goes lower on both counts (1000K and 0.2%), but needs a bridge for its schedule. For daytime use, the 1,100 lm output is the same as Hue’s 75 W-equivalent bulb.

What it does badly: the CRI is 82, so colours under its white light look flatter than under bulbs rated above 90. LIFX does not publish a spectrum for the warm settings or any flicker figure. It only works on 2.4 GHz Wi-Fi.

How it compares: if you already own a Hue Bridge, the Philips Hue White Ambiance gets warmer and dimmer. If you do not want an app at all, a fixed amber bulb for evening lamps and ordinary bulbs elsewhere does most of the job for less.