Here’s a color palette based on your request for an Excel theme using heritage navy, gold, white, grey, and black, with a focus on gold and navy:

json
{
  "palette_name": "Heritage Elegance",
  "colors": [
    {
      "name": "Heritage Navy",
      "hex_code": "
          
          #001F3F
       "
    },
    {
      "name": "Gold",
      "hex_code": "
          
          #FFD700
       "
    },
    {
      "name": "White",
      "hex_code": "
          
          #FFFFFF
       "
    },
    {
      "name": "Grey",
      "hex_code": "
          
          #808080
       "
    },
    {
      "name": "Black",
      "hex_code": "
          
          #000000
       "
    }
  ]
}

Palette Description:

The “Heritage Elegance” palette features a sophisticated blend of deep heritage navy and striking gold, providing a luxurious and professional look. The addition of white, grey, and black offers versatility and balance, making this palette perfect for creating a polished Excel theme.

What do you think of this color palette? Would you like to see adjustments or additional colors?