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RGB and HSL are related, but I wouldn't say HSL is based on RGB. From a design point-of-view RGB actually has some problems, as it is difficult to manipulate in a reliable manner. However, from a data point-of-view if is useful because it can scale up or down depending on how much room you have to store information. Also, it relates to the way TV and many video standards transmit information. In HSL, you have saturat…
“HSL” is a trivial transformation of RGB. It’s what you get when you prop an RGB cube up on one corner, squish 6 of the other corners into the same plane, and then inflate it until it fills a cylinder shape. (Note that none of these steps make any reference to human perception.) Here’s my 2010 diagram showing that visually https://en.wikipedia.org/wiki/File:Hsl-and-hsv.svg > Also, how exactly is lab color useful in w…
Re: Practical Color Theory for People Who Code
#71I just wanted to say that the diagram of the transformation from RGB to the different color models is absolutely beautiful as well as informative. When I have a free day or two I am going to have to put together an animation for it where you can track a given color through the process. My favorite class in university was about color models, all the way from CIE 1931 to the various transformations on it to match human perception and driven by anatomical insights about the human eye. It's fascinating!