How to change the color of an svg element in Tailwind

i am trying to change color svg element

  <svg
      xmlns='http://www.w3.org/2000/svg'
      className='fill-current h-28 align-middle m-2'
      width={size}
      height={size}
     >
      <circle
      r={radius}
      cx={halfsize}
      cy={halfsize}
      transform={transform}
      style={trackstyle}
      className='fill-current text-green-600'
    />
    <circle
      r={radius}
      cx={halfsize}
      cy={halfsize}
      transform={transform}
      style={indicatorstyle}
      className='opacity-75'
    />
  </svg>

but className='fill-current text-green-600'is not working