Boulder streetlights will soon be converted to LEDs, and the city is asking for community feedback on their preferred color temperature.

However, the CT rating does not reliably measure color from fluorescent and LED lights. Another system for measuring light color for these sources is called correlated color temperature (CCT).

Q: I have a client with 4000K LED tape light on top of his cabinets. I need to make it look like 2700K, but I have never dealt with gels or colored lenses. What would you recommend and how would I ...

Two problems with LED street lighting An incandescent bulb has a color temperature of 2400K, which means it contains far less blue and far more yellow and red wavelengths.

We spoke to experts to find the best LED lightbulbs, both color-changing and warm white, from brands including Philips, Tala, Soraa, and Ikea. Some are compatible with smart-home systems including ...