rgba($red, $green, $blue, $alpha) rgba($color, $alpha)

counters($args...) This function only exists as a workaround for IE7‘s

selector_extend($selector, $extendee, $extender) Returns a new version of $selector with $extendee

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

list_separator($list) Returns the separator of a list. If the list doesn’t have a separator due to having fewer than two

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

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

darken($color, $amount) Makes a color darker. Takes a color and a number between 0% and 100%, and returns a color with the

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

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