Kelvin vs. Lumen: Understanding Common Lighting Terms

Kelvin vs. Lumen

Lighting plays a crucial role in setting the mood, enhancing productivity, and creating the desired atmosphere in any space. When it comes to choosing the right lighting, two fundamental terms often come into play: Kelvin and Lumen. Understanding the distinction between these terms is key to making informed lighting decisions for your home or workplace.

Definition of Lumen

Lumen Diagram

Lumen is a unit of measurement that quantifies the amount of visible light emitted by a light source. In simpler terms, it tells you how bright a light source is. The higher the lumens, the brighter the light. When it comes to lighting, lumens are a crucial metric to consider, especially in the context of energy efficiency.

One of the remarkable features of LED lighting is its capacity to generate more lumens at a lower wattage compared to traditional incandescent lighting. This means that LEDs can produce high levels of brightness while consuming less energy, making them an environmentally-friendly and cost-effective choice.

Lumen vs Kelvin Char

Definition of Kelvin

Color Selection

Kelvin, often represented as "K," is a unit of measurement that describes the color temperature of light emitted by a source. In practical terms, it defines the color appearance of the light, ranging from warm, yellowish hues to cool, bluish tones. The Kelvin scale is crucial in determining the mood and ambiance created by your lighting.

Here are some common applications for different color temperatures:

2700K - 3000K (Warm Light): Ideal for creating a cozy and inviting atmosphere. Often used in residential settings to enhance comfort and relaxation.

3500K (Neutral White): Strikes a balance between warm and cool tones, making it suitable for various environments, including offices, classrooms, and healthcare facilities.

4000K (Cool White): Provides a bright and vibrant illumination, making it perfect for commercial spaces, such as retail stores and warehouses.

5000K+ (Daylight): Offers a crisp, energizing light similar to natural daylight. Frequently used in outdoor settings for security and visibility.

At NuWatt, we understand the importance of flexibility. That's why our products allow you to choose from all five color temperatures (2700K, 3000K, 3500K, 4000K, 5000K) with just a flick of a switch. Whether you're aiming for a warm and inviting residential atmosphere or need the brightness of commercial lighting, we have the right solution for you in our residential lighting collection and commercial lighting collection.

Choosing the Right Kelvin Color

The choice of Kelvin color temperature depends on the specific application and the mood you want to create:

2700K - 3000K (Warm Light)

  • Creates a cozy and intimate ambiance.
  • Ideal for bedrooms, living rooms, and restaurants.

3500K (Neutral White)

  • Strikes a balance between warm and cool tones.
  • Suitable for offices, classrooms, and healthcare facilities.

4000K (Cool White)

  • Provides a bright and vibrant illumination.
  • Perfect for retail stores, warehouses, and task lighting.

5000K+ (Daylight)

  • Offers crisp, energizing light.
  • Great for outdoor spaces, garages, and areas where visibility is crucial.
  • Choosing the right Kelvin color ensures your lighting complements the function and mood of the space effectively.

Choosing the Right Lumens

Selecting the appropriate number of lumens for a space is essential to ensure adequate illumination. The number of lumens you need depends on factors like room size, purpose, and desired brightness level. To calculate the required lumens, you can use helpful guides like this one, which takes into account square footage and lighting goals.


Understanding Kelvin and Lumen is essential when making lighting decisions for your home or workplace. The interplay between these two factors allows you to create the perfect atmosphere and functionality in any environment. At NuWatt, we offer lighting solutions that empower you to choose the ideal Kelvin color temperature and lumens for your specific needs. Illuminate your space with NuWatt's versatile and energy-efficient LED lighting solutions, where lighting meets innovation.