noun
warm white
A warm white color, often used in lighting contexts to describe a slightly yellowish white light.
このLED電球は温白色の光を出します。
This LED bulb emits a warm white light.
電球色 is an even warmer, amber-like white similar to incandescent bulbs, whereas 温白色 is slightly less warm.
Compound of 温 (warm) + 白色 (white color).