Sort HSL in JS

c=[];
r=[[]];
l=0;
elems=5;
for(x=0;x<elems;x++){
  c.push([Math.floor(Math.random()*360),Math.floor(Math.random()*100),Math.floor(Math.random()*100)]);
}
c=c.sort(function(a,b){
  if(a[0] == b[0])return 0;
  return(a[0]>b[0])?1:-1;
});
for(x=0;x<elems-1;x++){
  r[l].push(c[x]);
  if(c[x+1][0]-c[x][0]>=30){
    l++;
    r.push([]);
  }
}
r[l].push(c[x]);
if (360-r.slice(-1)[0].slice(-1)[0][0]+r[0][0][0]<30){
  for(x=r.slice(-1)[0].length-1;x>=0;x--){
    r[0].splice(0,0,r.slice(-1)[0][x]);
  }
  r.pop();
}
console.log(r);