"Cool white" refers to a specific color temperature of light, typically ranging from 4000K to 5000K. This type of light appears bright and slightly bluish, creating a crisp and clean atmosphere. It is often used in commercial spaces, offices, and modern homes to enhance visibility and create an energetic environment. In contrast to warm white light, which has a yellowish hue, cool white is favored for tasks that require focus and clarity. It is commonly found in LED bulbs, fluorescent lighting, and daylight simulation lamps, making it a popular choice for both residential and professional settings.