How to choose the right light bulb warmth ‘Light temperature is measured in Kelvins,’ explains Marlena Kaminska, Designer at ...

The color of light ... This is called a "temperature," because the hotter fire gets, the more it changes from a warm yellow glow to white. The lower the Kelvin rating, such as the common ...

The color temperature of light denotes how the light appears on a spectrum from warm (yellow-toned) to cool (blue-toned). It's measured in degrees of Kelvin (K) on a scale from 1,000 to 10,000.