Types/LightScript.Color/RGBToHSL.ps1
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param( # The red part [Parameter(Mandatory=$true,Position=0)] [Alias('R')] [Byte] $Red, # The green part [Parameter(Mandatory=$true,Position=1)] [Alias('G')] [Byte] $Green, # The blue part [Parameter(Mandatory=$true,Position=2)] [Alias('B')] [Byte] $Blue ) [float]$PercentRed = $Red / 255 [float]$PercentGreen = $Green / 255 [float]$PercentBlue = $Blue / 255 $min = $max = $PercentRed foreach ($_ in $PercentGreen, $PercentBlue) { if ($_ -lt $min) { $min = $_ } if ($_ -ge $max) { $max = $_ } } $Luminance = ($min + $max) / 2 $delta = $max - $min if (-not $delta) { $hue = $saturation = 0 } else { $saturation = $delta $saturation /= (1 - [Math]::Abs(((2 * $Luminance) -1))) $hue = if ($Max -eq $PercentRed){ ($PercentGreen - $PercentBlue)/$delta % 6 } elseif ($max -eq $PercentGreen) { (($PercentBlue - $PercentRed)/ $delta) + 2 } else { (($PercentRed - $PercentGreen)/ $delta) + 4 } } $hue*=60 if ($hue -gt 360) { $hue -= 360 } if ($hue -lt 0) { $hue = 360 + $hue } [PSCustomObject][Ordered]@{Hue = $hue;Saturation = $saturation;Luminance = $Luminance} |