Try not to use HEX codes for real life colour references, And as pointed out, different lighting conditions will change the colour regardless – Me and a buddy were developing an APP together, idea was that you could take a photo on your phone and the APP would give you a range of HEX numbers based on the image, just something for designers who see an interesting colour range and want to make a swatch or something. Anyway, we quickly discovered the APP is flawed by its own merits if I took a photo of a piece of white paper at 9 am and then again at 11 am the lighting would be so different than the HEX code wouldn’t even be on the same spectrum. Then we started thinking about how many different HEX numbers would actually show up on a piece of white paper at 9 am, does it display all the HEX numbers? It would probably be 50 or 100 different numbers or does it give you an average middle ground? Well, that’s not accurate… As you can tell, the project came to a permanent halt. TL;DR; lighting will affect the colour regardless, so the final colour mix doesn’t have to be 100% accurate, I’d say 80-90% accurate will suffice.
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