"Sam Hopkins" wrote:

There's also a "temperature" of the bulb. Don't confuse this with heat, it
has to do with how we perceive the bulbs color.

It refers to the temperature a black body would have to be to create
that light.

You know red hot, white hot etc, that is the thing. If you could heat a
piece of steel to 5000 degrees K it would look like daylight, instead of
just red hot.

In summary, the higher the color temperature, the bluer the light.