Here’s a vibrant color palette with 11 distinct colors that will stand out against black text in Excel:

json
{
  "palette_name": "Vibrant Excel Colors",
  "colors": [
    {
      "name": "Bright Red",
      "hex_code": "
          
          #FF0000
       "
    },
    {
      "name": "Lime Green",
      "hex_code": "
          
          #00FF00
       "
    },
    {
      "name": "Royal Blue",
      "hex_code": "
          
          #0000FF
       "
    },
    {
      "name": "Golden Yellow",
      "hex_code": "
          
          #FFD700
       "
    },
    {
      "name": "Deep Pink",
      "hex_code": "
          
          #FF1493
       "
    },
    {
      "name": "Turquoise",
      "hex_code": "
          
          #40E0D0
       "
    },
    {
      "name": "Orchid",
      "hex_code": "
          
          #DA70D6
       "
    },
    {
      "name": "Coral",
      "hex_code": "
          
          #FF7F50
       "
    },
    {
      "name": "Slate Blue",
      "hex_code": "
          
          #6A5ACD
       "
    },
    {
      "name": "Crimson",
      "hex_code": "
          
          #DC143C
       "
    },
    {
      "name": "Medium Sea Green",
      "hex_code": "
          
          #3CB371
       "
    }
  ]
}

This palette includes bright and contrasting colors that should work well for visibility when paired with black text.

Do you have a specific context or theme in mind for using these colors, or would you like suggestions for specific applications in Excel?