Here’s a color palette designed for an Excel spreadsheet with blue as the main color, along with vibrant colors that will stand out:

json
{
  "palette_name": "Excel Dynamic Blue",
  "colors": [
    {
      "name": "Main Blue",
      "hex_code": "
                            
                            #007BFF
                        "
    },
    {
      "name": "Bright Red",
      "hex_code": "
                            
                            #FF4136
                        "
    },
    {
      "name": "Sunny Yellow",
      "hex_code": "
                            
                            #FFDC00
                        "
    },
    {
      "name": "Vibrant Green",
      "hex_code": "
                            
                            #2ECC40
                        "
    },
    {
      "name": "Deep Purple",
      "hex_code": "
                            
                            #6F42C1
                        "
    }
  ]
}

This palette features a main blue color, which serves as the foundation. The bright red and sunny yellow will draw attention, while the vibrant green and deep purple add diversity and interest.

Would you like tips on how to implement this palette in your spreadsheet? Or do you have specific elements you want to focus on?