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Light reflectance values


Approximate light reflectance value of colours

Resene light reflectance values are measured from each colour standard using a spectrophotometer and are the CIE Tristimulus Y value (brightness) of the colour.

The approximate light reflectance value (LRV) of a colour indicates the amount of visible light that a colour will reflect. Black has a light reflectance value of 0% and absorbs all light. The surfaces are consequently very dark and can get very hot. In contrast, white has a light reflectance value of 100% and keeps a building light and cool. All colours fit within these two extremes.

Resene CoolColours™ look the same as standard colours but are formulated to reflect the sun's energy and have better heat and total solar reflectance (TSR) properties. They reflect the same visible light as a standard colour but reflect significantly more heat, keeping the coating, substrate and building cooler.

Mid to dark colours are not suitable for some exterior substrates and if used may cause damage to the substrate, such as warping, checking and premature failure. Always check with the substrate supplier prior to commencing any work to ensure colour selections fit within their guidelines. Resene also manufactures Resene CoolColour technology and this may increase the colour range that can be suitable over some heat sensitive substrates - refer to Resene for further information.

To find the light reflectance value of a Resene colour, visit the Resene online swatch library and look up the colour using the search tools or download the Resene colour list sorted by Light Reflectance Value (LRV).

Download colour list sorted by Light Reflectance Value (LRV)

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Colours shown on this website are a representation only. Please refer to the actual paint or product sample. Resene colour charts, testpots and samples are available for ordering online.   See measurements/conversions for more details on how electronic colour values are achieved.

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