What CCT is best for each application?
This depends on personal preference and the type of environment. In a relaxed environment, such as a home living room or nursery, a low, warm CCT is common. A warm white light source will highlight other warm colors in a room, is least likely to show imperfections, and appears less bright when compared to higher CCTs. However, in an office or warehouse where visibility is crucial, a higher CCT (natural or cool white) would be best as it appears brighter and more crisp.