Here’s a revised color palette featuring more earth tones while still being distinct and suitable for a line graph:

json
{
  "palette_name": "Earthy Tones Palette",
  "colors": [
    {
      "name": "Olive Green",
      "hex_code": "
          
          #7D8B45
       "
    },
    {
      "name": "Terracotta",
      "hex_code": "
          
          #C65D30
       "
    },
    {
      "name": "Slate Gray",
      "hex_code": "
          
          #6A6E73
       "
    },
    {
      "name": "Burnt Umber",
      "hex_code": "
          
          #7C4D3A
       "
    },
    {
      "name": "Sandy Brown",
      "hex_code": "
          
          #D3B48D
       "
    }
  ]
}

This palette is composed of warm, earthy tones that will provide a grounded aesthetic while remaining distinct enough for clear visibility on a line graph.

Would you like further customization or additional information about these colors?