code: def compound(clr, flip=False):
      
      def _wrap(x, min, threshold, plus):
          if x - min < threshold:
              return x + plus
          else:
              return x - min
  
      d = 1
      if flip: d = -1
  
      clr = color(clr)
      colors = colorlist(clr)
  
      c = clr.rotate_ryb(30 * d)
      c.brightness = _wrap(clr.brightness, 0.25, 0.6, 0.25)
      colors.append(c)
  
      c = clr.rotate_ryb(30 * d)
      c.saturation = _wrap(clr.saturation, 0.4, 0.1, 0.4)
      c.brightness = _wrap(clr.brightness, 0.4, 0.2, 0.4)
      colors.append(c)
  
      c = clr.rotate_ryb(160 * d)
      c.saturation = _wrap(clr.saturation, 0.25, 0.1, 0.25)
      c.brightness = max(0.2, clr.brightness)
      colors.append(c)
  
      c = clr.rotate_ryb(150 * d)
      c.saturation = _wrap(clr.saturation, 0.1, 0.8, 0.1)
      c.brightness = _wrap(clr.brightness, 0.3, 0.6, 0.3)
      colors.append(c)
  
      c = clr.rotate_ryb(150 * d)
      c.saturation = _wrap(clr.saturation, 0.1, 0.8, 0.1)
      c.brightness = _wrap(clr.brightness, 0.4, 0.2, 0.4)
      # colors.append(c)
  
      return colors
docs: Roughly the complement and some far analogs.