Color Temperature is a physical concept used to define the illumination of light souce. The color temperature of a light source is the temperature of an ideal black body radiator that radiates light of comparable hue to that of the light source. Color temperature is conventionally stated in the unit of absolute temperature, the Kelvin, having the unit symbol K Color temperatures over 5,000K are called cool colors (cool white) while lower color temperatures (2,700K-3,000K) are called warm colors (yellowish white through red). For LED encapsulation manufacturer, the LED they produce is with different kind of color, and they pick up LEDs in a range like 2600-2800K to sell to their customer. There is no totally same color for LED Beads. So, CCT is a range, but not a specific value. The CCT of Hanron lighting Co. Limited product is 2300-2500K, 2600-2800K, 2800K-3200K, 4000K-4500K and 5500K-6500K. Special color range can offer on customer's request.