Here is the updated color palette based on your specifications, while maintaining the overall dynamic theme of Material 3 for Android:

json
{
  "palette_name": "Dynamic Theme Color Material3 Updated",
  "colors": [
    {
      "name": "Royal Blue",
      "hex_code": "
                            
                            #0052CC
                        "
    },
    {
      "name": "Amber",
      "hex_code": "
                            
                            #FFC107
                        "
    },
    {
      "name": "Green",
      "hex_code": "
                            
                            #00C853
                        "
    },
    {
      "name": "Light Grey",
      "hex_code": "
                            
                            #F9FAFB
                        "
    }
  ]
}

This updated palette features a strong Royal Blue for the primary color, a vibrant Amber for the secondary color, a fresh Green for the accent, and a soft Light Grey for the background.

Would you like to make any further adjustments or additions to this palette?