Correlated color temperature (CCT), an important aspect of LED lighting, characterizes how cool or how warm normally white light appears. CCT, indicated in units called Kelvin (K), is not an indication of the amount of heat a light bulb produces when on. Its value determines whether the LEDs produce warm or cold light. LEDs with a low Kelvin value produce a warm yellow, more cozy light, while those with a higher Kelvin value produce a cool blue, more energizing light. The higher the color temperature does not mean the brighter the light output. Brightness is measured in Lumens (lm).
Color temperature is an aesthetic choice, so each person will have their own preference for each setting and application. Preference is as individual and varied as there are applications and people. But generally Warmer Whites (3000K) are preferred for living areas and reception areas where you want a more relaxed environment, while Cool Whites (9000K+) are mostly used for automotive applications.
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