The following example shows how the Luminance Contrast Assessment Tool (LCAT) can be used to check differing colours against each other to determine if a 30% luminance contrast will be achieved. Each combination can then be compared.
In this case, the wall will be Dulux White Polar Half:
This will be assessed against the following proposed door colours. Any proposed combination must achieve a minimum 30% luminance contrast.
Image Source: https://www.dulux.com.au/specifier/colour/colour-atlas
When the LRV values are entered into the multiple comparison sheet of the LCAT we see that only two combinations achieve a 30% luminance contrast.
Centre Dust achieves a 39% luminance contrast.
But the clear winner is Timber Shadow which achieves a 74% luminance contrast.
Now wasn’t that a fun exercise?
You can get a copy of the LCAT here
or view other examples of the LCAT in use here: