Here is a color palette based on the request for “twelve fresh colors” excluding black, white, and gray:

json
{
  "palette_name": "Fresh Twelve",
  "colors": [
    {
      "name": "Mint Green",
      "hex_code": "
                            
                            #98FF98
                        "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
                            
                            #87CEEB
                        "
    },
    {
      "name": "Peach",
      "hex_code": "
                            
                            #FFDAB9
                        "
    },
    {
      "name": "Lemon Yellow",
      "hex_code": "
                            
                            #FFFACD
                        "
    },
    {
      "name": "Coral Pink",
      "hex_code": "
                            
                            #FF6F61
                        "
    },
    {
      "name": "Lavender Purple",
      "hex_code": "
                            
                            #E6E6FA
                        "
    },
    {
      "name": "Light Sea Green",
      "hex_code": "
                            
                            #20B2AA
                        "
    },
    {
      "name": "Sunny Orange",
      "hex_code": "
                            
                            #FFA500
                        "
    },
    {
      "name": "Lilac",
      "hex_code": "
                            
                            #C8A2C8
                        "
    },
    {
      "name": "Turquoise",
      "hex_code": "
                            
                            #40E0D0
                        "
    },
    {
      "name": "Fuchsia",
      "hex_code": "
                            
                            #FF00FF
                        "
    },
    {
      "name": "Goldenrod",
      "hex_code": "
                            
                            #DAA520
                        "
    }
  ]
}

This color palette, named “Fresh Twelve,” is vibrant and lively, featuring a range of fresh colors that can evoke a sense of joy and creativity.

Would you like to know more about any specific color from this palette or need assistance with something else?