LEDs (light-emitting diodes) are a long-lasting, energy-efficient lighting technology. White LED light is created by combining red, blue and green LEDs or using blue LEDs combined with a phosphor coating that emits yellow. The resulting cool or warm white light produced will depend on the combination of colours used to make the white light.
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The terms "cool" and "warm" refer to the colour temperature of the LED rope lights. Colour temperature indicates the perceived hue of the light to the naked eye. A cool light gives off a bluish light, while a warmer light looks more yellow.
Colour temperature affects colour rendering, meaning that different lights make colours look different to the eye. Think of home stores where you can hold colour samples under various types of lighting. The way a colour looks can change based on the colour of lighting it is seen under. A paint chip seen under a cool, bluish light will look completely different when held under a warmer, yellow light.
A common use for LED rope lights is as a home accent, for example over and under the kitchen cabinets. Consider the investment you put into your kitchen--it is one of the hardest-working rooms in your home and if you ever want to sell, can be a make-it-or-break-it feature. Choose warm or cool LED lighting based on the colour temperature of your current lighting because you'll want to match it.
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