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So I set out to find tibbit a new palette... and fell down a rabbit hole. In the previous post I tried to just sample a realistic color, but didn't return the results I wanted. Instead I decided to make this grid of blue hues and different saturation levels. I found out that color is so complex. HSV stands for Hue, Saturation, and Value. This is a cylindrical color projection of standard RGB. sRGB is an old standard for monitors that denotes how much red, green, or blue, each pixel should emit. Hue ranges from 0 degrees to 360 degrees, and saturation and value range from 0 to 100%. The Saturation/Value combo is supposed to independently describe how colorful or how bright something is, right? And hue is just "which color"? However HSV it is not uniform, with all 3 influencing each other.

I've taken my current refsheet, kept the same value of 90% and made a grid of hue/saturation. The original is outlined in red. If I ask "Are all of these the same brightness?" the answer is obviously not. Just look at the top right corner vs the bottom left. The hue shifting left from blue to cyan increases brightness and seems to decrease saturation. Increasing the saturation going upwards decreases brightness and seems to shift the hue. Starting in the top right corner and going down we start to mix more purple in. From this we learn that HSV isn't going to help us a lot. If I want to change the color one way, then I'll (subtly) affect the other two. I need a better scale. This is when I discovered a new scale called LCh:
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