rgba

Overloads:

• rgba($red, $green, $blue, $alpha)

  Parameters:

  • $red (Number) — The amount of red in the color. Must be between 0 and 255 inclusive or 0% and 100% inclusive
  • $green (Number) — The amount of green in the color. Must be between 0 and 255 inclusive or 0% and 100% inclusive
  • $blue (Number) — The amount of blue in the color. Must be between 0 and 255 inclusive or 0% and 100% inclusive
  • $alpha (Number) — The opacity of the color. Must be between 0 and 1 inclusive

  Returns:

  • (Color)

  Raises:

  • (ArgumentError) — if any parameter is the wrong type or out of bounds
• rgba($color, $alpha)

  Sets the opacity of an existing 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) — The color whose opacity will be changed.
  • $alpha (Number) — The new opacity of the color. Must be between 0 and 1 inclusive

  Returns:

  • (Color)

  Raises:

  • (ArgumentError) — if $alpha is out of bounds or either parameter is the wrong type