LUM Function
Returns the value of a color's luminosity component.
Syntax
LUM(expression)
Parameters
Name |
Required/Optional |
Data Type |
Description |
|---|---|---|---|
expression |
Required |
Numeric |
The index of a color in the document's color table, or a reference to a cell that contains a color index. |
Return Value
Number
Remarks
The return value is a number in the range 0 to 240, inclusive. The function returns 0 for invalid input.
Example 1
LUM(Sheet.4!FillForegnd)
Returns the luminosity of Sheet.4's fill foreground color.
Example 2
LUM(6)
Returns 120 if the document uses the default Visio color palette, where magenta is the color at index 6.
Example 3
LUM(HSL(10, 20, 30))
Returns 30.