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Color temperature gets most of the attention in circadian lighting discussions, but two other specifications — CRI and flicker — can also affect how a bulb looks and feels in everyday use. A bulb can have the color temperature you...

1800K is a deeper amber tone, similar to candlelight or firelight, with less blue-wavelength content than 2700K, which is standard "warm white" LED and incandescent-style lighting. Both look warm to the eye, but 1800K has a measurably weaker effect on...