rgb($red, $green, $blue) Creates a Color object from red, green, and blue values.

feature_exists($feature) Returns whether a feature exists in the current Sass runtime. The

saturation($color) Returns the saturation component of a color. See

transparentize($color, $amount) Also known as: fade_out Makes

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

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

index($list, $value) Returns the position of a value within a list. If the value isn’t found, returns null instead

lightness($color) Returns the lightness component of a color. See

scale_color($color, [$red], [$green], [$blue], [$saturation], [$lightness], [$alpha]) Fluidly scales one or more properties

unique_id Returns a unique CSS identifier. The identifier is returned as an unquoted string. The identifier returned is only