Here is an updated color palette that includes a shade of purple to represent royalty, while maintaining the essence of the United Kingdom.

json
{
  "palette_name": "British Heritage with Royal Purple",
  "colors": [
    {
      "name": "Royal Blue",
      "hex_code": "
                            
                            #00247D
                        "
    },
    {
      "name": "Crimson Red",
      "hex_code": "
                            
                            #C8102E
                        "
    },
    {
      "name": "Pure White",
      "hex_code": "
                            
                            #FFFFFF
                        "
    },
    {
      "name": "Stone Grey",
      "hex_code": "
                            
                            #A0A8B3
                        "
    },
    {
      "name": "Gold",
      "hex_code": "
                            
                            #FFD700
                        "
    },
    {
      "name": "Royal Purple",
      "hex_code": "
                            
                            #6A1B9A
                        "
    }
  ]
}

This revised palette adds royal purple, symbolizing nobility and luxury, alongside the original colors inspired by the Union Jack. This addition enhances the richness and depth of the palette.

Would you like any further adjustments or additional colors?