@function url-friendly-colour($colour)

@return '%23' + str-slice('#{$colour}', 2, -1)

// Remove the unit of a length // css-tricks.com/snippets/sass/strip-unit-function/ @function strip-unit($number)

@if type-of($number) == 'number' and not unitless($number)
  @return $number / ($number * 0 + 1)

@return $number