LED technology is permanently improving and we are especially seeing better quality in lighting colour, making LED lighting more attractive for both home and commercial users.
Previously LED had been accused of not being able to fulfill a full enough range of different shades of white light, with varying brightness levels to satisfy the market, but huge progress has been made.
Deciding on which new LED lamps to buy is not an easy decision when you are purchasing LEDs for the first time.
Primarily you need to think about the environment you are lighting. You would probably want a stark, extremely bright light if you are lighting a studio or gallery? Or perhaps a warmer light is required, for example in a reception area or a staff room.
Correlated Colour Temperature (CCT) is a lighting term to describe how the colour of the light appears from a lamp and this is measured in kelvins (K). To understand which lamp you want, you simply need to know that the lower the kelvins, the more yellow or warm that lamp will appear. At the highest end of that scale would be a very bright light, close to natural daylight.
|Kelvins||Type||How it would feel|
|1,000K||Candlelight Red/Yellow||Very Warm|
|2700K||Conventional Lamp – Yellow||Warm|
|4000K||Halogen/CFL – Blue||White|
|10,000K||Blue Sky – Blue||Very Cool|
So warm yellow light or cool blue light?
It’s not a trick question and there isn’t really a set of rules to follow. Everyone will prefer a different type of light for the environment they live or work in.
In fact studies have been done which show that in a work environment, were people need to be reading or typing, vision is much improved under lighting around the 5000K mark. Added to this the colour temperature of the light, combined with the excellent levels of uniformity, LED lighting is truly enhancing the workplace for employees.
Kelvin Colour Temperature Scale
If you want a modern, clean look, you may prefer the cleaner, brighter feel of a cool white lamp then go for 4000-5000K.
To summarise, LED’s can now match all the colour spectrums of a traditional incandescent lamp, just remember we are looking for a measurement in kelvins as opposed to watts.