@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