I want to use a javascript code in my PHP API

I am using a javascript code in my PHP API but when i am calling that API from android app or POSTMAN the JS doesn't get executed it just gets printed so is there any way to use it with PHP or can anyone convert my JS code to a PHP code that i can use in my API

here is the JS library -

    var ntc = {
    
        init: function() {
          var color, rgb, hsl;
          for(var i = 0; i < ntc.names.length; i++)
          {
            color = "#" + ntc.names[i][0];
            rgb = ntc.rgb(color);
            hsl = ntc.hsl(color);
            ntc.names[i].push(rgb[0], rgb[1], rgb[2], hsl[0], hsl[1], hsl[2]);
          }
        },
      
        name: function(color) {
      
          color = color.toUpperCase();
          if(color.length < 3 || color.length > 7)
            return ["#000000", "Invalid Color: " + color, false];
          if(color.length % 3 == 0)
            color = "#" + color;
          if(color.length == 4)
            color = "#" + color.substr(1, 1) + color.substr(1, 1) + color.substr(2, 1) + color.substr(2, 1) + color.substr(3, 1) + color.substr(3, 1);
      
          var rgb = ntc.rgb(color);
          var r = rgb[0], g = rgb[1], b = rgb[2];
          var hsl = ntc.hsl(color);
          var h = hsl[0], s = hsl[1], l = hsl[2];
          var ndf1 = 0; ndf2 = 0; ndf = 0;
          var cl = -1, df = -1;
      
          for(var i = 0; i < ntc.names.length; i++)
          {
            if(color == "#" + ntc.names[i][0])
              return ["#" + ntc.names[i][0], ntc.names[i][1], true];
      
            ndf1 = Math.pow(r - ntc.names[i][2], 2) + Math.pow(g - ntc.names[i][3], 2) + Math.pow(b - ntc.names[i][4], 2);
            ndf2 = Math.pow(h - ntc.names[i][5], 2) + Math.pow(s - ntc.names[i][6], 2) + Math.pow(l - ntc.names[i][7], 2);
            ndf = ndf1 + ndf2 * 2;
            if(df < 0 || df > ndf)
            {
              df = ndf;
              cl = i;
            }
          }
      
          return (cl < 0 ? ["#000000", "Invalid Color: " + color, false] : ["#" + ntc.names[cl][0], ntc.names[cl][1], false]);
        },
      
        // adopted from: Farbtastic 1.2
        // http://acko.net/dev/farbtastic
        hsl: function (color) {
      
          var rgb = [parseInt('0x' + color.substring(1, 3)) / 255, parseInt('0x' + color.substring(3, 5)) / 255, parseInt('0x' + color.substring(5, 7)) / 255];
          var min, max, delta, h, s, l;
          var r = rgb[0], g = rgb[1], b = rgb[2];
      
          min = Math.min(r, Math.min(g, b));
          max = Math.max(r, Math.max(g, b));
          delta = max - min;
          l = (min + max) / 2;
      
          s = 0;
          if(l > 0 && l < 1)
            s = delta / (l < 0.5 ? (2 * l) : (2 - 2 * l));
      
          h = 0;
          if(delta > 0)
          {
            if (max == r && max != g) h += (g - b) / delta;
            if (max == g && max != b) h += (2 + (b - r) / delta);
            if (max == b && max != r) h += (4 + (r - g) / delta);
            h /= 6;
          }
          return [parseInt(h * 255), parseInt(s * 255), parseInt(l * 255)];
        },
      
        // adopted from: Farbtastic 1.2
        // http://acko.net/dev/farbtastic
        rgb: function(color) {
          return [parseInt('0x' + color.substring(1, 3)), parseInt('0x' + color.substring(3, 5)),  parseInt('0x' + color.substring(5, 7))];
        },
      
        names: [
      ["000000", "black"],
      ["070707", "black"],
      ["0F0F0F", "black"],
      ["121111", "black"],
      ["181414", "black"],
      ["100C0C", "black"],
      ["1B1A1A", "black"],
      ["0A0707", "black"],
      ["0B0101", "black"],
      ["0A0505", "black"],
      ["F0F8FF", "blue"],
      ["1C34DB", "blue"],
      ["32CD32", "green"],
      ["41DC2D", "green"],
      ["1CDC03", "green"],
      ["32CD32", "green"],
      ["FFFAF0", "white"],
      ["FFFFFF", "white"],
      ["F7F5F5", "white"],
      ["FCFCFC", "white"],
      ["FEF7F7", "white"],
      ["880808", "red"],
      ["AA4A44", "red"],
      ["800020", "red"],
      ["FF0000", "red"],
      ["CD5C5C", "red"],
      ["800000", "pink"],
      ["FC07EA", "pink"],
      ["F520E5", "pink"],
      ["BA08AD", "pink"],
      ["CB25BF", "pink"],
      ["F719E7", "pink"],
      ["663399", "purple"],
      ["AF00FC", "purple"],
      ["B825F9", "purple"],
      ["C13FFA", "purple"],
      ["A534D6", "purple"],
      ["A109E3", "purple"],
      ["D57EFB", "purple"],
      ["FFFFE0", "yellow"],
      ["F7E90B", "yellow"],
      ["F7EB29", "yellow"],
      ["E7DB1B", "yellow"],
      ["C5BB12", "yellow"]
      ]
      
      }
      
      ntc.init();

this library is used to get a closest hex color name for the hex color passed to it from the array in it.

this is how i am using it in my php file -

<!-- Include name that color library -->
<script type="text/javascript" src="color.js"></script>

<script type="text/javascript">
    // 1. You need a hex code of the color
    var ColorCode = "<?=$_REQUEST['hex_color']?>";

    // 2. Rate the color using NTC
    var ntcMatch  = ntc.name(ColorCode);
    
    // 3. Handle the result. The library returns an array with the identified color.

    // 3.A RGB value of closest match e.g #01826B
    console.log(ntcMatch[0]);
    // Text string: Color name e.g "Deep Sea"
    console.log(ntcMatch[1]);
    document.write(ntcMatch[1]);
    // True if exact color match, a Boolean
    console.log(ntcMatch[2]);
</script>

the result i get when i call it from postman or android app -

the result i get in browser and i need in postman -