Here’s a color palette designed specifically for a Gantt chart in Excel. It includes a sober title header color, variations for subheaders, and a vibrant range for the items.

json
{
  "palette_name": "Gantt Chart Colors",
  "colors": [
    {
      "name": "Title Header",
      "hex_code": "
                            
                            #4A4A4A
                        "
    },
    {
      "name": "Subheader Light",
      "hex_code": "
                            
                            #7D7D7D
                        "
    },
    {
      "name": "Subheader Dark",
      "hex_code": "
                            
                            #2E2E2E
                        "
    },
    {
      "name": "Item Color 1",
      "hex_code": "
                            
                            #FF6F61
                        "
    },
    {
      "name": "Item Color 2",
      "hex_code": "
                            
                            #6B5B93
                        "
    },
    {
      "name": "Item Color 3",
      "hex_code": "
                            
                            #88B04B
                        "
    },
    {
      "name": "Item Color 4",
      "hex_code": "
                            
                            #F7CAC9
                        "
    },
    {
      "name": "Item Color 5",
      "hex_code": "
                            
                            #92A8D1
                        "
    },
    {
      "name": "Item Color 6",
      "hex_code": "
                            
                            #955251
                        "
    }
  ]
}

This palette includes a neutral color for headers to maintain professionalism while adding vibrant colors for the tasks to improve visibility and distinction.

Would you like to adjust any colors or add more variations?