Here is a color palette based on your request for pastel cool tones and complementary colors:

json
{
  "palette_name": "Pastel Cool Tones",
  "colors": [
    {
      "name": "Pastel Mauve Pink",
      "hex_code": "
          
          #D6A6C1
       "
    },
    {
      "name": "Dusty Mint Teal",
      "hex_code": "
          
          #A3C6C4
       "
    },
    {
      "name": "Dark Ashy Brown",
      "hex_code": "
          
          #4B3C3B
       "
    },
    {
      "name": "Cool Peachy Skin",
      "hex_code": "
          
          #F4C2B1
       "
    },
    {
      "name": "Soft Lavender",
      "hex_code": "
          
          #E2C7E3
       "
    },
    {
      "name": "Light Sky Blue",
      "hex_code": "
          
          #A4D8E1
       "
    }
  ]
}

This palette features a balanced mix of pastel cool tones along with a dark neutral to add depth. The soft lavender and light sky blue are included to provide additional harmony and contrast.

Would you like to know more about how to use this palette, or do you have any specific applications in mind?