Here’s a vibrant and harmonious color palette featuring light colors that work well together for cell shading in Excel, particularly behind black text:

json
{
  "palette_name": "Light Rainbow",
  "colors": [
    {
      "name": "Light Pink",
      "hex_code": "
          
          #FFB6C1
       "
    },
    {
      "name": "Light Coral",
      "hex_code": "
          
          #F08080
       "
    },
    {
      "name": "Light Yellow",
      "hex_code": "
          
          #FFFFE0
       "
    },
    {
      "name": "Light Green",
      "hex_code": "
          
          #90EE90
       "
    },
    {
      "name": "Light Sky Blue",
      "hex_code": "
          
          #87CEFA
       "
    },
    {
      "name": "Light Blue",
      "hex_code": "
          
          #ADD8E6
       "
    },
    {
      "name": "Lavender",
      "hex_code": "
          
          #E6E6FA
       "
    },
    {
      "name": "Peach Puff",
      "hex_code": "
          
          #FFDAB9
       "
    },
    {
      "name": "Misty Rose",
      "hex_code": "
          
          #FFE4E1
       "
    },
    {
      "name": "Light Goldenrod Yellow",
      "hex_code": "
          
          #FAFAD2
       "
    }
  ]
}

This “Light Rainbow” palette features a selection of soft and light colors that will provide a nice backdrop for black text, ensuring readability while adding a cheerful touch to your Excel sheets.

Would you like any additional colors or specific shades adjusted?