Color/Collections of tips and tricks

An example of how to use LMTX to calculate RGB values is the following:

• % Use a color picker to get red, green and blue values of a color:
  % Example: RAL 2005: red = 255, green = 35, blue = 1
  % Create variables from the values:
  
  \setvariables[ColorName][r=255,g=35,b=1]
  
  % Do some magic:
  
  \usemodule[mathfun]
  
  % Define the actual color based on variables:
  
  \definecolor[ColorName][%
    r={\mathexpr[.3N]{\getvariable{ColorName}{r}/255}},
    g={\mathexpr[.3N]{\getvariable{ColorName}{g}/255}},
    b={\mathexpr[.3N]{\getvariable{ColorName}{b}/255}},
  ]%
  
  % Test it:
  
  \framed
    [foregroundcolor=white, 
     background=color, 
     backgroundcolor=ColorName]{Hello WORLD!}
  \blank[line]
  \colorcomponents{ColorName}
  

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