Ever bought a bulb only to dislike the light it produces? You buy a bulb, install it in, turn it on, and immediately hate the color of the light click this link. The problem is often light 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 2,700K, the light is warm and golden, similar to an old incandescent bulb. Around 4000K, the light becomes balanced white. Increase the temperature to 5000K–6500K, and the light begins to feel brighter and cooler, similar to the way midday sunlight appears on a clear day.
Both the sleeping area and family room generally work well with warm white at around 2700K to 3000K. The softer glow in this spectrum feels comfortable and relaxed, making it well suited for winding down in the evening. Use a higher temperature here and the room can start to feel more like an office environment.
Kitchen and bathroom areas are often better with 3500K to 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 pores, blemishes, and smudges clearly in the mirror. A neutral white color temperature provides clear illumination 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. Higher color temperatures can help support concentration when completing tasks and may also make detailed work more comfortable.
Light output is another important factor. Focus on lumens, not wattage. As a rough estimate, around 800 lumens can replace the equivalent of an old 60W incandescent bulb in many table lamps. Reading spaces typically need between 450–800 lumens, while a kitchen overhead light might require 1500+ lumens distributed across the entire room.
Another factor that many people forget when switching to LED bulbs is the Colour Rendering Index, commonly called CRI. A CRI of 90+ provides a more accurate appearance for skin, food, clothing, and other materials. LEDs with a low CRI can make red sweaters appear muted or brownish.