Here is the updated color palette with a different accent color, while still keeping the overall subdued and professional look suitable for an Excel chart:

json
{
  "palette_name": "Subtle Earth Tones with New Accent",
  "colors": [
    {
      "name": "Muted Sage",
      "hex_code": "
                            
                            #B7C9A5
                        "
    },
    {
      "name": "Sage Green",
      "hex_code": "
                            
                            #A3BFAF
                        "
    },
    {
      "name": "Dusty Blue",
      "hex_code": "
                            
                            #A3B7C9
                        "
    },
    {
      "name": "Soft Blue",
      "hex_code": "
                            
                            #8DA3B7
                        "
    },
    {
      "name": "Warm Gray",
      "hex_code": "
                            
                            #B0B3B8
                        "
    },
    {
      "name": "Light Gray",
      "hex_code": "
                            
                            #D1D3D4
                        "
    },
    {
      "name": "Muted Brick",
      "hex_code": "
                            
                            #C84A3D
                        "
    },
    {
      "name": "Soft Brick",
      "hex_code": "
                            
                            #D67F6D
                        "
    },
    {
      "name": "Accent Mustard Gold",
      "hex_code": "
                            
                            #D4C45A
                        "
    }
  ]
}

This palette, “Subtle Earth Tones with New Accent,” features a mustard gold accent color that adds a warm and inviting touch, perfect for drawing attention to key data points without overwhelming the overall design.

Would you like to explore how to best use this accent color in your Excel chart, or do you have any other preferences or adjustments in mind?