Here is a light color palette suitable for Excel:

json
{
  "palette_name": "Pastel Light Colors",
  "colors": [
    {
      "name": "Light Blue",
      "hex_code": "
          
          #A3C1DA
       "
    },
    {
      "name": "Light Pink",
      "hex_code": "
          
          #F4B6C2
       "
    },
    {
      "name": "Light Green",
      "hex_code": "
          
          #B2E2B2
       "
    },
    {
      "name": "Light Yellow",
      "hex_code": "
          
          #F3E5AB
       "
    },
    {
      "name": "Light Lavender",
      "hex_code": "
          
          #E2C8E0
       "
    },
    {
      "name": "Light Peach",
      "hex_code": "
          
          #F8DFAF
       "
    },
    {
      "name": "Light Mint",
      "hex_code": "
          
          #C1E1D5
       "
    },
    {
      "name": "Light Coral",
      "hex_code": "
          
          #F6B1A8
       "
    }
  ]
}

This pastel color palette consists of soft and light shades that are visually appealing and can be easily distinguished in an Excel spreadsheet. Would you like any specific recommendations on how to use these colors in your Excel projects?