Light Reflectance Value

What is LRV?
Light Reflectance Value (LRV) is the total quantity of visible light reflected by a surface (e.g. floorings, ceilings, walls and furniture), at all wavelengths and directions when illuminated by a light source¹.

How to interpret LRV?
The LRV scale runs from 0, which is a perfectly absorbing surface (assumed to be totally black), up to 100, which is a fully reflective surface (considered to be the perfect white). Because of practical influences in any application, black is always greater than 0 and white never equals 100.
Additional to colour, the structure and gloss of the product or surface are also determining factors for LRV¹.

¹ General definition, (in variations) used in other industries (i.e. paint, ceilings, ceramics)