Given the huge range of products on offer, choosing the best luminaire can be an overwhelming task for any project. When compared to Incandescent, Halogen and CFL bulbs, LEDs are undoubtedly the most efficient source of lighting; they last much longer, consume less energy and emit very little heat. The added benefits associated with LEDs are an exceptional colour range, reliability, directional lighting and instant illumination to name a few.
LEDs are becoming an increasingly popular choice; however, we understand the difficulty consumers face when choosing between an individually selected LED or a pre-packaged cluster. Quality, consistency and performance are all important factors to consider, and gaining an understanding of colour mixing and how to create the perfect white will provide you with the relevant knowledge to make an informed decision and choose the right luminaire for you.
The art of colour mixing
Colour mixing with LEDs is the key to achieving both beautiful and effective results; it is important to select the right LED combination to successfully create your desired look and colour. The range from warm and rich, to vivid and bright colours is known as Correlated Colour Temperature (CCT) which is measured in degrees Kelvin on a scale from 1000 to 10,000. Unlike measuring temperature in degrees Celsius, the warmer a bulb’s light is, the lower its temperature will be. A cooler temperature will have a higher value. Fixtures with red, green, blue and amber LEDs (RGBA) create warm, rich colours, whilst fixtures with red, green, blue and white LEDs (RGBW) create vivid, bright colours.
RGB (red, green and blue) colour mixing was the first type of colour mixing used in LED fixtures, and is still the most commonly used today. Colour mixing works by combining two different wavelengths of light to create a new colour. For example, mixing green light with red light will result in a yellow colour.