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?