Here is a harmonic color palette designed for an Excel spreadsheet, featuring 15 beautiful colors that complement each other well:

json
{
  "palette_name": "Harmonic Excel Palette",
  "colors": [
    {
      "name": "Soft Sky Blue",
      "hex_code": "
                            
                            #A4D8E1
                        "
    },
    {
      "name": "Warm Peach",
      "hex_code": "
                            
                            #F2C6A0
                        "
    },
    {
      "name": "Lavender Mist",
      "hex_code": "
                            
                            #E1C6E7
                        "
    },
    {
      "name": "Sage Green",
      "hex_code": "
                            
                            #B7D99A
                        "
    },
    {
      "name": "Gentle Coral",
      "hex_code": "
                            
                            #F6B5A0
                        "
    },
    {
      "name": "Powder Blue",
      "hex_code": "
                            
                            #B0D0E0
                        "
    },
    {
      "name": "Mellow Yellow",
      "hex_code": "
                            
                            #F6EB61
                        "
    },
    {
      "name": "Soft Lilac",
      "hex_code": "
                            
                            #D3C0E3
                        "
    },
    {
      "name": "Dusty Rose",
      "hex_code": "
                            
                            #D4A5B4
                        "
    },
    {
      "name": "Mint Cream",
      "hex_code": "
                            
                            #D9EAD3
                        "
    },
    {
      "name": "Sunset Orange",
      "hex_code": "
                            
                            #F6A4A2
                        "
    },
    {
      "name": "Cool Gray",
      "hex_code": "
                            
                            #AFAFAF
                        "
    },
    {
      "name": "Light Aqua",
      "hex_code": "
                            
                            #A0D8D2
                        "
    },
    {
      "name": "Faded Plum",
      "hex_code": "
                            
                            #BDA0C5
                        "
    },
    {
      "name": "Creamy White",
      "hex_code": "
                            
                            #F9F9F9
                        "
    }
  ]
}

This palette emphasizes a harmonious blend of soft, pastel colors that create a visually appealing and calm atmosphere for data presentation in Excel.

Would you like any further adjustments or additional suggestions on how to apply this palette effectively in your spreadsheet?