Here is a color palette featuring 10 mid-tone colors that would work well in Excel:

json
{
  "palette_name": "Excel Mid-Tones",
  "colors": [
    {
      "name": "Soft Blue",
      "hex_code": "
          
          #A7C6ED
       "
    },
    {
      "name": "Pale Green",
      "hex_code": "
          
          #A8D8B9
       "
    },
    {
      "name": "Light Coral",
      "hex_code": "
          
          #F6B3A2
       "
    },
    {
      "name": "Lavender",
      "hex_code": "
          
          #E1B7E1
       "
    },
    {
      "name": "Peach",
      "hex_code": "
          
          #FBD5B5
       "
    },
    {
      "name": "Muted Yellow",
      "hex_code": "
          
          #E6D77B
       "
    },
    {
      "name": "Dusty Rose",
      "hex_code": "
          
          #D18F94
       "
    },
    {
      "name": "Slate Gray",
      "hex_code": "
          
          #A3B1B5
       "
    },
    {
      "name": "Soft Orange",
      "hex_code": "
          
          #F7B07C
       "
    },
    {
      "name": "Warm Beige",
      "hex_code": "
          
          #D9CBA6
       "
    }
  ]
}

This palette features mid-tone colors that are soft and pleasant, making them perfect for visualizing data in Excel without overwhelming the viewer. Would you like to know more about how to use these colors effectively in your Excel sheets?