Here is a color palette designed for Excel that is visually easy on the eyes, featuring soft and calming colors:

json
{
  "palette_name": "Soothing Excel Palette",
  "colors": [
    {
      "name": "Soft Blue",
      "hex_code": "
          
          #A4C8E1
       "
    },
    {
      "name": "Pale Green",
      "hex_code": "
          
          #B7E4C7
       "
    },
    {
      "name": "Light Lavender",
      "hex_code": "
          
          #E2C2E0
       "
    },
    {
      "name": "Warm Beige",
      "hex_code": "
          
          #E4CBA8
       "
    },
    {
      "name": "Gentle Peach",
      "hex_code": "
          
          #F6C2A9
       "
    }
  ]
}

This palette consists of soft shades that are easy on the eyes, making it ideal for prolonged use in Excel spreadsheets. The colors are chosen to provide pleasant contrast without being overwhelming, helping to maintain focus on the data presented.

Would you like to see any specific combinations or additional colors for different purposes?