Here is a color palette designed specifically for Excel, featuring 8 colors, including red and green, while excluding blue:

json
{
  "palette_name": "Excel Color Scheme",
  "colors": [
    {
      "name": "Red",
      "hex_code": "
          
          #FF0000
       "
    },
    {
      "name": "Green",
      "hex_code": "
          
          #00FF00
       "
    },
    {
      "name": "Yellow",
      "hex_code": "
          
          #FFFF00
       "
    },
    {
      "name": "Orange",
      "hex_code": "
          
          #FFA500
       "
    },
    {
      "name": "Purple",
      "hex_code": "
          
          #800080
       "
    },
    {
      "name": "Brown",
      "hex_code": "
          
          #8B4513
       "
    },
    {
      "name": "Gray",
      "hex_code": "
          
          #808080
       "
    },
    {
      "name": "Black",
      "hex_code": "
          
          #000000
       "
    }
  ]
}

This palette provides a vibrant and contrasting color scheme suitable for Excel, allowing for clear data visualization without the use of blue.

Would you like any adjustments to this palette or additional colors?