Ever bought a bulb only to dislike the light it produces? You buy a bulb, install it in, switch it on, and instantly hate the color of the light myeverlights. 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 2700K, the light is warm and golden, similar to an old traditional incandescent lamp. Around 4000K, the light becomes balanced white. Move up to 5000K or 6500K, and the light begins to feel brighter and cooler, similar to the way daylight appears on a clear day.
Both the bedroom and living room generally work well with soft white at around 2700K-3000K. The softer glow in this spectrum feels comfortable and relaxed, making it ideal for winding down in the evening. Use a cooler 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 everything clearly while working at the counter. In the bathroom, you're applying makeup and want to see skin details clearly in the mirror. Neutral white light 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 white. Higher color temperatures can help support focus when completing tasks and may also make detailed work more comfortable.
Light output is another important factor. Focus on lumens, not watts. 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 ceiling might require 1500+ lumens distributed across the entire room.
Another factor that many people overlook when switching to LED bulbs is the Colour Rendering Index, commonly called CRI. 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 muted or brownish.