private/colors/Get-ColorLightness.ps1
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function Get-ColorLightness { param( [int] $Red, [int] $Green, [int] $Blue ) $redPercent = $Red / 255.0 $greenPercent = $Green / 255.0 $bluePercent = $Blue / 255.0 $max = [Math]::Max([Math]::Max($redPercent, $greenPercent), $bluePercent) $min = [Math]::Min([Math]::Min($redPercent, $greenPercent), $bluePercent) return ($max + $min) / 2 } |