How do I use color code in inline svgs (google maps)

I am displaying a custom marker as .svg in google maps API in JavaScript.

It seems like that the google maps api does not like using #00492C in code. fill="#0000" does not work, only fill="green" would work.

var icon: {
        url: 'data:image/svg+xml;utf-8, \
              <svg width="30" height="48" viewBox="1 -10 60 78" xmlns="http://www.w3.org/2000/svg"> \
              <path fill="#00492C" d="M53.1,48.1c3.9-5.1,6.3-11.3,6.3-18.2C59.4,13.7,46.2,0.5,30,0.5C13.8,0.5,0.6,13.7,0.6,29.9 c0,6.9,2.5,13.1,6.3,18.2C12.8,55.8,30,77.5,30,77.5S47.2,55.8,53.1,48.1z"></path> \
              </svg>'
    }

I am expecting my marker getting dark green but instead it just does not appear anymore.

You need to escape the # character as that's reserved for the start of a fragment identifier in a URL. Replace all occurances of # with %23

icon: {
    url: 'data:image/svg+xml;utf-8, \
          <svg width="30" height="48" viewBox="1 -10 60 78" xmlns="http://www.w3.org/2000/svg"> \
          <path fill="%2300492C" d="M53.1,48.1c3.9-5.1,6.3-11.3,6.3-18.2C59.4,13.7,46.2,0.5,30,0.5C13.8,0.5,0.6,13.7,0.6,29.9 c0,6.9,2.5,13.1,6.3,18.2C12.8,55.8,30,77.5,30,77.5S47.2,55.8,53.1,48.1z"></path> \
          </svg>'
}

proof of concept fiddle

code snippet:

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 4,
    center: {
      lat: -33,
      lng: 151
    }
  });
  var beachMarker = new google.maps.Marker({
    position: {
      lat: -33.890,
      lng: 151.274
    },
    map: map,
    icon: {
      url: 'data:image/svg+xml;utf-8, \
              <svg width="30" height="48" viewBox="1 -10 60 78" xmlns="http://www.w3.org/2000/svg"> \
              <path fill="%2300492C" d="M53.1,48.1c3.9-5.1,6.3-11.3,6.3-18.2C59.4,13.7,46.2,0.5,30,0.5C13.8,0.5,0.6,13.7,0.6,29.9 c0,6.9,2.5,13.1,6.3,18.2C12.8,55.8,30,77.5,30,77.5S47.2,55.8,53.1,48.1z"></path> \
              </svg>'
    }
  });
}

html,
body,
#map {
  height: 100%;
  margin: 0;
  padding: 0;
}

<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap">
</script>