Here is a color palette based on your request for the Shiraz city logo, featuring medium contrast colors without whites or blacks:

json
{
  "palette_name": "Shiraz City Logo Palette",
  "colors": [
    {
      "name": "Shiraz Red",
      "hex_code": "
          
          #9B1B30
       "
    },
    {
      "name": "Deep Lapis",
      "hex_code": "
          
          #2A5D9C
       "
    },
    {
      "name": "Warm Gold",
      "hex_code": "
          
          #C2A85D
       "
    }
  ]
}

This palette includes a rich Shiraz red, a deep lapis blue, and a warm gold to provide a balanced, medium contrast without any whites or blacks.

Would you like to explore more color variations or have any other specific requirements for the logo design?