Have you ever experienced this? You buy a bulb, screw it in, switch it on, and immediately hate the colour of the light that site. The problem is often color temperature, and that's quite common with LEDs because the range of options is so broad.
The scale is measured in Kelvin, and at about 2700K, the light is soft yellow, similar to an old traditional incandescent lamp. At approximately 4000K, the light becomes balanced white. Move up to 5000K or 6500K, and the light begins to feel cool and blue, similar to the way daylight appears on a clear day.
Both the sleeping area and family room generally work well with soft white at around 2700K to 3000K. The softer glow in this spectrum feels comfortable and relaxed, making it well suited for relaxing in the evening. Use a higher temperature here and the room can start to feel more like an airport lounge.
Kitchen and bathroom areas are often better with 3500K–4000K. When you're cooking, you want to make sure you can see details properly while working at the counter. In the bathroom, you're doing makeup and want to see pores, blemishes, and smudges clearly in the mirror. Neutral white light provides good visibility without feeling too harsh.
Home workspaces and garages can benefit from brighter and cooler lighting, typically 5000K and above. This is often described as daylight. Cooler light can help support concentration when completing tasks and may also reduce visual strain.
Light output is another important factor. Focus on lumens, not wattage. As a general estimate, around 800 lumens can replace the equivalent of an old 60W incandescent bulb in many table lamps. Reading areas typically need between 450 and 800 lumens, while a kitchen overhead light might require 1500+ lumens distributed across the entire room.
Another factor that many people overlook when switching to LED bulbs is the Color Rendering Index, commonly called CRI rating. A 90 or higher CRI provides a more accurate appearance for skin, food, clothing, and other materials. LEDs with a low CRI can make red sweaters appear dull brown.