Here is a revised color palette featuring three contrasting colors that can effectively represent a stacked bar chart. These colors are selected to stand out against each other.

json
{
  "palette_name": "Contrasting Stacked Bar Colors",
  "colors": [
    {
      "name": "Coral",
      "hex_code": "
                            
                            #FF6F61
                        "
    },
    {
      "name": "Teal",
      "hex_code": "
                            
                            #009688
                        "
    },
    {
      "name": "Golden Yellow",
      "hex_code": "
                            
                            #FFC107
                        "
    }
  ]
}

This palette includes coral, teal, and golden yellow, providing a vibrant contrast that enhances visibility and distinction in a stacked bar chart.

Would you like to explore more color combinations or any specific shades?