Saturday, November 10, 2012

Color temperature: Warm white, Neutral white, Cool White;What is the difference ?

Color temperature: Warm white, Neutral white, Cool White;What is the difference ?

We generally choose lighting to select our environment. 

At work, most of us sit under fluorescent tubes that are actually quite harsh producing cool lighting. Cool lighting makes us feel more energy and helps us concentrate and work. As well as the workplace, cool lighting is well suited to kitchens and bathrooms.

At home or in a restaurant, we want to relax which is where warm lighting presents a slightly more red effect to make us feel warmer. Typically dimmed, warm lighting is more suited to the living room or bedroom.


Light color is measured as a temperature,the index being the correlated color temperature or CCT for short measured in degrees Kelvin (°K). Its value is representative of the color of light a "black-body radiator" . Such as an incandescent lamp filament,emits as it is heated to high temperatures.The first visible light being a red glow at around 1000°K through orange, yellow, white and finally blue at around 7000°K.

From the perspective of lighting, most LED, compact fluorescent and fluorescent tubes quote a white color temperature and these are typically as follows:

2700~3500°K - Warm white - these tend to be more red and suitable for warm environments such as living room, restaurants and bedrooms.

4000~4500°K - Neutral white - where available? This is the middle ground between warm and cool. Although it covers both bases, it is sometimes best to choose one of the others to suit environment.

6000~6500°K - Cool white - the cool light helps alertness and is therefore better for bathrooms and kitchens at home or work areas.


Any Comments, pls feel free to contact Amber Zhu: 
Email: amberzhu0915@gmail.com 
Mobile: (0086) 18948177087
MSN : amber.zhu@live.com 
Skype: amber.zhu88 

1 comment:

  1. well this was really interesting and informative to know. I never knew that cool lightning provisions more energy and concentration. Thanks for posting!

    ReplyDelete