complement($color) Returns the complement of a color. This is identical to adjust-hue(color, 180deg).

map_merge($map1, $map2) Merges two maps together into a new map. Keys in $map2 will take precedence over keys

map_remove($map, $keys...) Returns a new map with keys removed. Like all map functions,

map_has_key($map, $key) Returns whether a map has a value associated with a given key.

saturate($color, $amount) Makes a color more saturated. Takes a color and a number between 0% and 100%, and returns a color

mixin_exists($name) Check whether a mixin with the given name exists.

inspect($value) Return a string containing the value as its Sass representation.

unit($number) Returns the unit(s) associated with a number. Complex units are sorted in alphabetical order by numerator and

round($number) Rounds a number to the nearest whole number.

hsla($hue, $saturation, $lightness, $alpha) Creates a Color from hue, saturation, lightness