code: def test_rgb_to_hsl_part_11():
      """Test rgb to hsl color function"""
      assert rgb_to_hsl(102, 102, 153) == (240, 20, 50)
      assert rgb_to_hsl(51, 51, 204) == (240, 60, 50)
      assert rgb_to_hsl(0, 0, 255) == (240, 100, 50)
  
imports: from __future__ import division
  from pygal.colors import darken, desaturate, hsl_to_rgb, lighten, parse_color, rgb_to_hsl, rotate, saturate, unparse_color
label_desc: Use image node_id 31 for calling a global function with example usage: test_rgb_to_hsl_part_11() without return types