01-31-2017, 10:21 PM
2700K LED or fluorescent lights are colored to have almost the same color temperature as 100W incandescent light bulbs and are a "warm" yellow.
3000K are slightly less yellow, with a bit more blue in them but are still pretty yellow.
4100K are halogens are are noticeably bluer/less yellow.
5000K and up are very blue and are more like the harsher fluorescent lights in office buildings.
However people with cataracts or some vision loss can often see much better with more blue from 5000K bulbs, however I don't have much of this yet and much prefer 2700 or 3000K bulbs. BTW, I calibrate my LCD monitors to around 54-5800K depending on the room lighting during the day and ~3400K at night. Funny how I prefer my light bluer on a monitor but not nearly as searingly blue as they come from the factory.
IMO you should *never* use anything other than 3000K or lower in outside bulbs at night as all that extra blue lights messes up animals' circadian rhythms. But they're all the rage and most people don't give a damn anyways.
3000K are slightly less yellow, with a bit more blue in them but are still pretty yellow.
4100K are halogens are are noticeably bluer/less yellow.
5000K and up are very blue and are more like the harsher fluorescent lights in office buildings.
However people with cataracts or some vision loss can often see much better with more blue from 5000K bulbs, however I don't have much of this yet and much prefer 2700 or 3000K bulbs. BTW, I calibrate my LCD monitors to around 54-5800K depending on the room lighting during the day and ~3400K at night. Funny how I prefer my light bluer on a monitor but not nearly as searingly blue as they come from the factory.
IMO you should *never* use anything other than 3000K or lower in outside bulbs at night as all that extra blue lights messes up animals' circadian rhythms. But they're all the rage and most people don't give a damn anyways.