fresh-home/get-colorxy.ps1

function Get-ColorXY ([int]$Red=0, [int]$Green=0, [int]$Blue=0, [int]$Decimals=4)
{
    $redC =  ($red / 255)
    $greenC = ($green / 255)
    $blueC = ($blue / 255)

    if ($redC -gt 0.04045) {
        $redN = [math]::pow(($redC + .055) / (1 + .055),2.4)
    } else {
        $redN  = $redC / 12.92
    }

    if ($greenC -gt 0.04045) {
        $greenN = [math]::pow(($greenC + .055) / (1 + .055),2.4)
    } else {
        $greenN  = $greenC / 12.92
    }

    if ($blueC -gt 0.04045) {
        $blueN = [math]::pow(($blueC + .055) / (1 + .055),2.4)
    } else {
        $blueN  = $blueC / 12.92
    }

    $X = $redN * 0.664511 + $greenN * 0.154324 + $blueN * 0.162028;

    $Y = $redN * 0.283881 + $greenN * 0.668433 + $blueN * 0.047685;

    $Z = $redN * 0.000088 + $greenN * 0.072310 + $blueN * 0.986039;

    if (($X+$Y+$Z) -gt 0) {
        $x2 = $X / ($X + $Y + $Z)
        $y2 = $Y / ($X + $Y + $Z)
    } else {
        $x2 = 0
        $y2 = 0
    }

    [pscustomobject]@{
        color_x = [math]::Round($x2,$Decimals)
        color_y = [math]::Round($y2,$Decimals)
    }
    
    #$x2, $y2

}