ColorFormat.Brightness property (Excel)
Returns or sets the luminosity of the specified object. Read/write.
Syntax
expression.Brightness
expression A variable that represents a ColorFormat object.
Return value
Single
Remarks
The value for this property must be a number from 0.0 (dimmest) to 1.0 (brightest).
Example
The following code example sets the brightness of the fill color for the first shape on the active worksheet.
ActiveSheet.Shapes(1).Fill.ForeColor.Brightness = 0.5
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