Here is a pastel color palette designed for a grid-based game with regions:

json
{
  "palette_name": "Pastel Regions",
  "colors": [
    {
      "name": "Pastel Pink",
      "hex_code": "
          
          #FAD3D3
       "
    },
    {
      "name": "Pastel Blue",
      "hex_code": "
          
          #A3C1DA
       "
    },
    {
      "name": "Pastel Green",
      "hex_code": "
          
          #B2E0B2
       "
    },
    {
      "name": "Pastel Yellow",
      "hex_code": "
          
          #FDF3B0
       "
    },
    {
      "name": "Pastel Purple",
      "hex_code": "
          
          #D8B3E0
       "
    },
    {
      "name": "Pastel Orange",
      "hex_code": "
          
          #F2B2A2
       "
    },
    {
      "name": "Pastel Mint",
      "hex_code": "
          
          #C1E2D4
       "
    },
    {
      "name": "Pastel Peach",
      "hex_code": "
          
          #F9D5B3
       "
    },
    {
      "name": "Pastel Lavender",
      "hex_code": "
          
          #E1C6E7
       "
    },
    {
      "name": "Pastel Coral",
      "hex_code": "
          
          #F4A6A1
       "
    },
    {
      "name": "Pastel Sky Blue",
      "hex_code": "
          
          #A4D9E1
       "
    },
    {
      "name": "Pastel Lemon",
      "hex_code": "
          
          #E9EBB2
       "
    }
  ]
}

This palette includes a variety of soft, muted colors that are perfect for creating visually distinct regions in your game while maintaining a gentle aesthetic. Would you like any further assistance with your game design or perhaps specific themes for each region?