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ALPHA

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

Syntax

=ALPHA(color)

Arguments

ArgumentTypeDescription
colorColorThe 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