title: What is the alghoritm to generate an analogic color scheme based on a single input color?
body: <p>I'm creating a website and as I am thoroughly enjoying using SASS/Compass for organizing my CSS, I came to the idea of making my website themable. </p>
  
  <p>At first, I was thinking to simply have a set of say 8 variables that represent the colors of a theme palette. Next, all CSS rules will use those colors, or lightened/darkened versions of it (for shadows, overlays, gradients and glows).</p>
  
  <p>Then I came to the crazy idea of having a single theme base color, after which the rest of the palette is calculated from that. For example:</p>
  
  <p><img src="https://i.stack.imgur.com/AnCJ4.png" alt="enter image description here"></p>
  
  <p>In this tool, I picked a single base color (the green at the inside of the circle), after which it generated a full color palette based on that (see right), in this case it is an "analogic" color scheme.</p>
  
  <p>My question is if the alghoritm in use by this tool can be replicated in SASS, so that I can have a single configurable color, whilst SASS calculates the rest of the color scheme.</p>
  
  <p>I know some of you may doubt the usefulness of this exercise, but I think of it as a fun experiment.</p>