Sass/Compass - Convert Hex, RGB, or Named Color to RGBA

Question

This may be Compass 101, but has anyone written a mixin which sets the alpha value of a color? Ideally, I would like the mixin to take any form of color definition, and app

Answer 1

Use the rgba function built into Sass

Sets the opacity of a color.

Examples:

rgba(#102030, 0.5) => rgba(16, 32, 48, 0.5)
rgba(blue, 0.2) => rgba(0, 0, 255, 0.2)

Parameters:
(Color) color
(Number) alpha — A number between 0 and 1

Returns:
(Color)

Code:

rgba(#ff0000, 0.5); // Output is rgba(255,0,0,0.5);