Everything You Need to Know about Light Bulb Color Temperature

Lighting plays a vital role in our daily lives. The different hues of light emitted by different bulbs on different occasions are determined by their color temperature. Color temperature affects our visual perception, mood, and comfort. In this article, we'll explore the meaning and concepts of color temperature, such as color temperature charts, light bulb color temperature, and light temperature scales. With this knowledge, you can make smart choices to create the perfect ambiance for any setting. Now let's start together!

What is Color Temperature?

Color temperature is a metric that describes the color of a light source. It refers to the relative warmth or coolness of the light emitted by a light source. Color temperature is not a concept that describes the brightness of light, but is related to the color of light. Different color temperatures give the light different hues, from warmer to cooler.

How is Color Temperature Measured?

Color temperature is usually measured in Kelvin (Kelvin) as a unit. Kelvin is a measure of how hot the light emitted by an object is, expressed in absolute temperature. The measure of color temperature is arranged from low temperature to high temperature, ranging from relatively warm (approximately 2000K) to high cool (approximately 6500K). The lower the number, the warmer the yellow light; the higher the number, the cooler the light is.

In color temperature, some commonly used units include:


Less than 2000K: dim light, close to candlelight. This color temperature is often used to create a warm and romantic atmosphere.


2000K-3000K: Warm white light with a faint yellow tinge. This color temperature is often used in home environments to create a warm and cozy atmosphere.


3000K-4500K: Bright white light. This range of color temperatures is considered an approximation of natural light and is suitable for many everyday activities such as offices, commercial establishments, and learning environments.

4500K-6500K: Bright blue-white light. Light at this color temperature is called daylight color and is similar to natural sunlight during the day. It is typically used in environments that require higher brightness and clarity, such as operating rooms, laboratories, and offices.

6500K and above: Bright blue light. Light at this color temperature exhibits a very bright blue tint and is often used for specific lighting needs, such as certain industrial applications and special lighting effects.​

Classification of Bulb Color Temperature

Different types of bulbs can offer different ranges of color temperatures, making them suitable for various lighting needs. Here are examples of common bulb types and their color temperature ranges:​

color temperature chart 

​Features and Applications of Different Color Temperature Bulbs​

Soft White (low color temperature): Warm white light has a longer wavelength, giving it a warmer yellow light. Suitable for homes, bedrooms, living rooms, and other places that create a warm atmosphere.

Bright White (Medium Color Temperature): Natural White Light presents a neutral white light for clear and bright lighting in offices, commercial spaces, and learning environments.

Daylight (High Color Temperature): Cool White Light presents a cooler bluish-white light and is suitable for places that require high brightness and clarity, such as operating rooms, laboratories, and offices.

color temperature application 

How to Choose the Right Color Temperature for Business

Different scenes require different color temperatures to meet specific needs and create the right atmosphere. Here are some practical suggestions and considerations for common business and office usage scenarios:​

Office Lighting:

Office lighting such as working areas, meeting rooms, or reception areas, choosing natural white light (medium color temperature) can improve focus, concentration, and visual clarity.

For lounges, negotiation areas, and shared spaces, warm white light can be chosen to create a relaxing and welcoming atmosphere.

office lighting 

Retail Store Lighting:

In commodity display and display areas, choosing an appropriate color temperature can enhance the attractiveness and display effect of commodities. Generally speaking, natural white light or a color temperature slightly higher than natural white light is a common choice.

At cash registers, service desks and warehouses,  choosing a higher color temperature can increase alertness and concentration, ensuring accurate transactions and services.

retail store lighting 

Restaurants and Cafes Lighting:

In the dining area, choosing a warm color temperature, such as warm white light, can create a comfortable and warm dining atmosphere.

For bar counters and lounge areas, lower color temperatures can be chosen to create a relaxed and intimate atmosphere.​


restaurant lighting 

Gyms and Sports Lighting:

IIn the sports area, choosing a higher color temperature, such as natural white light or a color temperature slightly higher than natural white light, can enhance vitality and alertness, and improve sports performance.

gyms lighting 


Bonus Tips: Precautions of Choosing Light Bulb Color Temperature

  • Consider employee preferences and job needs to improve work efficiency and employee satisfaction.

  • Ensure even distribution of lighting, avoid shadows and uneven lighting.

  • Avoid sudden color temperature changes, and use gradual transitions to reduce the sense of mutation.

  • Choose the appropriate color temperature according to the specific activity or task needed to improve the effect.

  • In commercial and office spaces, regular maintenance and replacement of lamps to maintain consistency and avoid flickering​.​​


In commercial and office applications, choosing the right color temperature according to needs can improve work efficiency, create a comfortable environment, and create an atmosphere suitable for different activities and tasks. By following practical advice and dos and don'ts, we can choose the right bulbs and lighting solutions to bring about better lighting experiences in the places we live and work.​​​


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