By now, many homeowners have replaced old, no-longer-made incandescent lightbulbs with LED or CFL ones. This means that, instead of the watts system, the quality of light emitted by these new bulbs is measured in Kelvins. In general, for too-dark rooms, “look for bulbs that are 5,000 Kelvins, which mimic daylight and give a whiter light,” says Speck. “It can make a room feel bigger and brighter.”
