Ever bought a bulb only to dislike the light it produces? You purchase a bulb, screw it in, switch it on, and immediately hate the color of the light read this. The problem is often color temperature, and that's very common with LEDs because the range of options is so broad.
The scale is measured in Kelvin, and at about 2700K, the light is warm and golden, similar to an old traditional incandescent lamp. At approximately 4000K, the light becomes neutral white. Move up to 5000K or 6500K, and the light begins to feel brighter and cooler, similar to the way midday sunlight appears on a clear day.
Both the bedroom and family room generally work well with soft white at around 2700K to 3000K. The softer glow in this spectrum feels warm and calming, 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.
Kitchens and bathrooms are often better with 3500K–4000K. When you're cooking, you want to make sure you can see details properly while chopping ingredients. In the bathroom, you're doing makeup and want to see skin details clearly in the mirror. Neutral white light provides clear illumination without feeling too harsh.
Home offices and garages can benefit from stronger and cooler lighting, typically 5000K or higher. This is often described as daylight. Higher color temperatures can help support concentration when completing tasks and may also reduce visual strain.
Brightness is another consideration. Focus on lumen output, not wattage. As a rough estimate, around 800 lumens can replace the equivalent of an old 60-watt bulb in many table lamps. Reading spaces 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. A CRI of 90+ provides a more accurate appearance for skin tones, food, and fabrics. LEDs with a lower CRI rating can make red clothing appear dull brown.