Light color explained: What does 2700 K, 4000 K or 6500 K actually mean?
While browsing for lights or bulbs, you've probably come across the term "light color" or a number like 2700 K , 4000 K , or 6500 K. But what does this mean—and which light color suits your room?
🔍 What is light color anyway?
The color of light, also called color temperature , describes the color effect of the light —that is, whether it appears warm, neutral, or cool. It is measured in Kelvin (K) .
The spectrum ranges from warm, reddish-orange light (similar to that of a sunset) to cool, bluish light , as is known from a clear daytime sky.
The lower the Kelvin number , the warmer the light – the higher the number , the cooler and more objective it appears.
🌈 The most common light colors at a glance
| Light color | Kelvin value | Effect |
|---|---|---|
| Warm white | up to approx. 3000 K | Cozy, relaxing, homely |
| Neutral white | approx. 3300–5300 K | Clear, objective, balanced |
| Cool white / daylight white | from 5300 K | Activating, promotes concentration |
🏡 Which light color suits which room?
Living room, bedroom, wellness areas
👉 Recommendation: 2700–3000 K (warm white)
Warm white light creates a relaxing atmosphere , ideal for relaxing or unwinding.
Tip: Some dimmable lights also change the light color when dimmed—from bright white to pleasantly warm. Simply use the "dimmable light color" filter in our shop.
Kitchen, bathroom, hallway
👉 Recommendation: approx. 3000-4000 K (neutral white)
Neutral white light is bright and natural without appearing too cold – ideal for functional rooms where you need good visibility without sacrificing comfort.
Offices, doctor's offices, workplaces, public areas
👉 Recommendation: from 5300 K (cold white to daylight white)
Bright, cool white light promotes concentration and performance —perfect for any room where clarity and focus are required. 6500 K has proven to be a good standard value here.
💡 Multi-talented: Lights with variable light color
Some modern lights allow you to individually adjust the light color—from 2700 K to 6500 K , for example. This allows you to flexibly adapt the light to your mood or activity .
👉 Simply activate the “dimmable light color” filter in the shop and discover suitable models.
❓ Any questions about light colors?
Feel free to leave us a comment – we will answer every question personally and help you find the perfect light for your room.
🔎 Tip: Discover our selection of interior lights with dimmable light color – for the perfect lighting mood in every room.
Conclusion: The right light color not only influences the mood in the room , but also your well-being . Whether cozy, functional, or productive – with the right Kelvin value, light becomes more than just illumination.
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