Ever bought a bulb only to dislike the light it produces? You buy a bulb, screw it in, switch it on, and instantly hate the colour of the light wholesale christmas lights. 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 soft yellow, similar to an old traditional incandescent lamp. At approximately 4000K, the light becomes balanced white. Move up 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 soft white at around 2700K to 3000K. The gentle illumination in this spectrum feels warm and calming, making it well suited for relaxing 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 preparing food, 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 skin details clearly in the mirror. Neutral white light provides good visibility without appearing overly bright.
Home workspaces and garages can benefit from brighter and cooler lighting, typically 5000K or higher. This is often described as daylight white. Cooler light 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 wattage. As a general estimate, 800 lumens can replace the equivalent of an old 60W incandescent 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 rating. A CRI of 90+ provides a natural appearance for skin tones, food, and fabrics. LEDs with a lower CRI rating can make red sweaters appear muted or brownish.