Calculate color value relationship
color-scheme, colors, css, sass
Solution
Maybe a bit late, but I found this while searching for the exact same functionality:
http://ethanmuller.github.io/sass-color-function-generator-thing/
For example: The input colors `#ff0000` and `#552222` result in the SASS function `darken( desaturate( #ff0000, 57 ), 27 )`
Problem
Is there a web app that could compute the relationship between two colors? I have an existing style guide with established hex values. I would like to add these colors as hsla values in sass variables. I can add each one as an independent variable but I would rather base all the colors on one base color. Then use percentages of change to establish the other colors. In doing this I could color shift the theme and maintain the "correct" values in the relationships.