Here’s the revised calming color palette incorporating your preference for a more muted blue:

json
{
  "palette_name": "Calm Nature Refined",
  "colors": [
    {
      "name": "Soft Sand",
      "hex_code": "
          
          #D8CFC4
       "
    },
    {
      "name": "Muted Slate Blue",
      "hex_code": "
          
          #6C7E94
       "
    },
    {
      "name": "Muted Olive Green",
      "hex_code": "
          
          #7C8B75
       "
    },
    {
      "name": "Rainy Gray",
      "hex_code": "
          
          #B0B3B8
       "
    },
    {
      "name": "Earthy Taupe",
      "hex_code": "
          
          #BFA6A0
       "
    },
    {
      "name": "Cloud White",
      "hex_code": "
          
          #F0F2F5
       "
    }
  ]
}

This updated palette now includes the muted slate blue, which fits perfectly with the overall calming theme and balances well with the other earth tones.

Would you like tips on how to use this palette in your space, or do you have any other adjustments in mind?