Here is a color palette based on your request for 7 colors, including 4 pastel shades:

json
{
  "palette_name": "Pastel Harmony",
  "colors": [
    {
      "name": "Pastel Pink",
      "hex_code": "
                            
                            #FFB3BA
                        "
    },
    {
      "name": "Pastel Blue",
      "hex_code": "
                            
                            #A0D6E8
                        "
    },
    {
      "name": "Pastel Green",
      "hex_code": "
                            
                            #B9FBC0
                        "
    },
    {
      "name": "Pastel Yellow",
      "hex_code": "
                            
                            #FFF5BA
                        "
    },
    {
      "name": "Coral",
      "hex_code": "
                            
                            #FF6F61
                        "
    },
    {
      "name": "Lavender",
      "hex_code": "
                            
                            #E6E6FA
                        "
    },
    {
      "name": "Mint",
      "hex_code": "
                            
                            #98FF98
                        "
    }
  ]
}

This palette combines soft pastel colors with some vibrant hues, creating a balanced and harmonious look.

What do you plan to use this color palette for?