text: const HSV = function(h = 0, s = 0, v = 0) {
      this.h = h
      this.s = s
      this.v = v
  }
  
  HSV.prototype.toString = function(){
      return `hsv(${Math.round(this.h)}, ${Math.round(this.s*100)}%, ${Math.round(this.v*100)}%)`
  }
  
  export default HSV