Here’s an extended color palette based on your original colors:

json
{
  "palette_name": "Extended Nature Palette",
  "colors": [
    {
      "name": "Teal Green",
      "hex_code": "
          
          #6eb8a8
       "
    },
    {
      "name": "Dark Green",
      "hex_code": "
          
          #2a584f
       "
    },
    {
      "name": "Olive Green",
      "hex_code": "
          
          #74a33f
       "
    },
    {
      "name": "Pale Yellow",
      "hex_code": "
          
          #fcffc0
       "
    },
    {
      "name": "Rose Red",
      "hex_code": "
          
          #c6505a
       "
    },
    {
      "name": "Dark Purple",
      "hex_code": "
          
          #2f142f
       "
    },
    {
      "name": "Mauve",
      "hex_code": "
          
          #774448
       "
    },
    {
      "name": "Peach",
      "hex_code": "
          
          #ee9c5d
       "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #87ceeb
       "
    },
    {
      "name": "Burnt Orange",
      "hex_code": "
          
          #d76f30
       "
    },
    {
      "name": "Soft Lavender",
      "hex_code": "
          
          #e3d5ea
       "
    },
    {
      "name": "Forest Green",
      "hex_code": "
          
          #3b8a45
       "
    }
  ]
}

This extended palette maintains the earthy and natural tones of your original selection while introducing a few additional colors that complement the existing ones. Would you like to see any specific variations or themes within this palette?