ALPHA

Gets the alpha channel of the specified color. Returns a decimal from 0 to 1.

Syntax

=ALPHA(color)

Arguments

Argument	Type	Description
color	Color	The color

Examples

=ALPHA("#0000ff")→ 1
Gets the alpha channel for the color represented by the hex color code #0000ff (blue)

=ALPHA(RGB(128, 128, 128, 0.5))→0.5
Gets the alpha channel for a color having a value of 128 for red, 128 for green, 128 for blue, and 0.5 for alpha

=ALPHA(0)→#ERROR!
Attempts to get the alpha channel from an integer, which is invalid because it cannot be converted to a color