Here is a color palette designed to be easy on the eyes for use with black text on a white background, perfect for spreadsheets:

json
{
  "palette_name": "Soft Pastel Palette",
  "colors": [
    {
      "name": "Soft Blue",
      "hex_code": "
          
          #A4C8E1
       "
    },
    {
      "name": "Pale Green",
      "hex_code": "
          
          #B7E9B5
       "
    },
    {
      "name": "Light Peach",
      "hex_code": "
          
          #F2C94C
       "
    },
    {
      "name": "Lavender Mist",
      "hex_code": "
          
          #E3C5E4
       "
    },
    {
      "name": "Light Gray",
      "hex_code": "
          
          #D0D0D0
       "
    }
  ]
}

This palette includes soft colors that provide a visually pleasing contrast against black text, making it easier to read while maintaining a clean and professional look.

Do you have any specific color preferences or themes in mind for your spreadsheet?