Les autres fonctions pour les couleurs

Opacity Functions

• alpha($color) / opacity($color) - Gets the alpha component (opacity) of a color.
• rgba($color, $alpha) - Changes the alpha component for a color.
• opacify($color, $amount) / fade-in($color, $amount) - Makes a color more opaque.
• transparentize($color, $amount) / fade-out($color, $amount) - Makes a color more transparent.

Other Color Functions

• adjust-color($color, [$red], [$green], [$blue], [$hue], [$saturation], [$lightness], [$alpha]) - Increases or decreases one or more components of a color.
• scale-color($color, [$red], [$green], [$blue], [$saturation], [$lightness], [$alpha]) - Fluidly scales one or more properties of a color.
• change-color($color, [$red], [$green], [$blue], [$hue], [$saturation], [$lightness], [$alpha]) - Changes one or more properties of a color.
• ie-hex-str($color) - Converts a color into the format understood by IE filters.