This Luminance Contrast Calculator is to be used where the LRVs are known or determined by equipment specified in AS1428.1 & AS1428.4.1, including a tristimulus colourimeter or spectrophotometer. For example, two (2) paint colours from a Dulux colour fan deck or a similar deck. The LRVs for each colour are found in the rear of the fan deck. Please note that these LRVs are Spectral Component Inclusive, which means that the finish will affect the actually perceived contrasts.
The Luminance contrast ratio will be calculated automatically when the two (2) LRVs are entered into the cells. To calculate other LCs, simply enter the values into the cells.
Contrast: —%
LRV stands for Luminance Reflectance Value
TGSI stands for Tactile Ground Surface Indicator
Please note that this luminance calculator is only intended to be used as a guide. LRV values should not be used to check different manufacturers product ie Dulux & Wattyl.
In using this calculator the user accepts that Equal Access Group will not be held liable for any results or misuse of this tool.
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