All light sources display a specific light spectrum which determines how we perceive colour.
CRI (Colour Rendering Index) is the standard measurement of a light sources ability to reveal the colours of objects in comparison to a reference ideal light source or natural light. In other words, to accurately render all frequencies of its colour spectrum compared to daylight.
The scale goes from 0-100, with CRI 100 having the best colour rendering ability. Think about how bright and beautiful colours look in natural sunlight. CRI 100 is the same colour rendering as natural daylight which is often given to incandescent/halogen bulbs.
So, the higher the number, the more natural and defined the colour of the surroundings will appear to the eye. Lighting with a colour rendering of 80 and above is considered a good colour rendering index.
Although CRI relates to the colour of the setting, it does not refer to the colour of the light output itself. The colour of the light is known as Correlated Colour Temperature (CCT) and is measured in Kelvin (K). Warmer/yellow bulbs = 3500k, whilst cooler/bluer bulbs = 6500k.
On average, the CRI of most LED products is between 70-90 which is close to the sun’s value. Designed to reflect colours truly and naturally. We currently only stock products that are CRI 80 rated which is stated in the product specification.