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by dotancohen 87 days ago
2700 is really cool. To the GP, if you're looking for something more like daylight but not noticeably yellow, try 3600k or thereabouts.

The actual temperature of the sun is over 5000k (yes, the k in lightbulb temperature corresponds to the Kelvin scale of temperature) but after being scattered by our atmosphere it appears cooler. And where did all that extra light go? It was scattered around, making the sky blue!

3 comments

The color of the solar light depends on the proportion of yellowish direct solar light and bluish sky light that fall on an object.

When the sky is covered by clouds, which mix the direct Sun light and the sky light, you get a color much closer to the true color of the Sun.

3700-4500 is my range I like these days
If I could run different lighting after sunset, I'd run something high-CRI in your range during the day and a low-CRI 3000 after sunset.

As it is, I compromise.

There are LED lamps which have a "warm dim" feature so that the appear oranger as you reduce the brightness.
Thanks, that's great to know! However, I also had to remove the high-CRI lights from some lamps because I found that they disturb my sleep if I have them on in the hours before bedtime.

I live in a 240-volt country, though, and I've never seen a dimmer switch here.

Personally I find 2700k-rated LED to not even be low-k enough to match incandescent.