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I get this question a lot that somebody wants a bulb with the warmest color available.
Color temperature or warmness is conventionally represented in kelvins, using the symbol K, a unit of measure for absolute temperature.
Lower color temperatures (2700–3000 K) are described as “warm colors” and they have a yellowish light.
Example of a 2200K light in nature: Generally, the color temperature of sun shifts with time in the day, i.e. from sunrise (2200 K) to noon (6600 K), then to sunset (2200 K) in a sunny day.
The warmest LED light bulb commercially available is 1800K. The 1800K bulb is very yellow in its color and it has a super warm light. The 1800K bulb is ideal for chandeliers, sconces, lanterns, ceiling fans, decorative indoor fixtures. The 1800K bulb is usually used for creating a relaxed atmosphere and is best for living rooms, dining rooms, and bedrooms.
If you go below 2000K it gives off a dim glow of light, comparable to what you might find from candlelight.
Color temperatures higher than 3500K are typically used for business and hospital applications, as the light is bright and has a bluish daylight cast that can be disturbing for home interiors.
Where to use warm-colored LED bulbs?
Warm LED-colored bulbs don`t really brighten up the room, therefore the best locations where to use these bulbs should be somewhere where you want relaxed lighting. The living room, dining room, bedroom, or any other room where you want soft lighting is a good choice.
Warm lighting feels more natural to us in the evenings and promotes relaxation.
Bonus tip: Warm colors are also more relaxing for the eyes and they soften the skin tone and reduce imperfections, so you`re going to be amazed how much better you look in warm-colored bulb lighting. But seriously, these bulbs are perfect for any place where you don`t require sharp lighting, like studying or doing some kind of precision work, use cooler lighting for tasks that require a lot of focus.