Here is a color palette based on your query:

json
{
  "palette_name": "Soft Serenity",
  "colors": [
    {
      "name": "Powder Pink",
      "hex_code": "
                            
                            #FADADD
                        "
    },
    {
      "name": "Lilac Mist",
      "hex_code": "
                            
                            #DCCFF9
                        "
    },
    {
      "name": "Mint Cream",
      "hex_code": "
                            
                            #D8F3DC
                        "
    },
    {
      "name": "Cool Gray",
      "hex_code": "
                            
                            #A9A9A9
                        "
    },
    {
      "name": "Deep Navy",
      "hex_code": "
                            
                            #2D2D5A
                        "
    }
  ]
}

Palette Description:
The “Soft Serenity” palette combines gentle pastels with a grounding deep navy, creating a harmonious blend that evokes calmness and tranquility. The Powder Pink and Lilac Mist offer a soft, feminine touch, while the Mint Cream adds freshness. Cool Gray serves as a neutral base, and Deep Navy provides depth and sophistication.

Would you like to explore variations of this palette or use it for a specific project?