Warm white LEDs are perfect for creating brilliant, energy efficient lighting for your home or office. These are specially designed to make your home feel warm and inviting, and do not suffer from the harsh "hospital exam room" effect that is so often the case with LEDs. 3000-3500K closely resembles the color of incandescent bulbs. These LEDs also work great with your Arduino, Raspberry Pi or BoardX project since they can controlled from the IO pins of these boards minimal boost and drive circuitry required!