Here’s the updated pastel color palette with the peach replaced and an additional color suggested.

json
{
  "palette_name": "Pastel Dreams",
  "colors": [
    {
      "name": "Pastel Teal",
      "hex_code": "
                            
                            #A3D4D7
                        "
    },
    {
      "name": "Pastel Periwinkle",
      "hex_code": "
                            
                            #B7C9E5
                        "
    },
    {
      "name": "Pastel Cornflower",
      "hex_code": "
                            
                            #A9C8E4
                        "
    },
    {
      "name": "Pastel Lavender",
      "hex_code": "
                            
                            #E3D5EA
                        "
    },
    {
      "name": "Pastel Mint",
      "hex_code": "
                            
                            #B2E5D8
                        "
    }
  ]
}

In this version, the Pastel Peach has been replaced with Pastel Mint, which adds a refreshing touch to the palette. If you have any more adjustments in mind or need further assistance, let me know!