It’s the most common choice for residential use.
The light appears as a bright, neutral white that shades into blue at the upper end of this range. Cool white bulbs fall in the range of 3100K to 4500K. Warm whites have a yellow tone, which is considered a 'warm' color. It’s a traditional, warm kind of lighting, and the best one for living rooms and bedrooms. Warm white light bulbs have a color temperature ranging from 2500K up to 3000K. These would be the warm, yellowish colors you can see in older light bulbs.