Here’s a color palette designed for a luxury nonprofit luncheon event, incorporating a dark purple as requested:

json
{
  "palette_name": "Elegant Luncheon",
  "colors": [
    {
      "name": "Dark Purple",
      "hex_code": "
          
          #5C4B8A
       "
    },
    {
      "name": "Gold",
      "hex_code": "
          
          #D4AF37
       "
    },
    {
      "name": "Cream",
      "hex_code": "
          
          #F5F5DC
       "
    },
    {
      "name": "Charcoal Gray",
      "hex_code": "
          
          #333333
       "
    },
    {
      "name": "Soft Blush",
      "hex_code": "
          
          #F2C6D4
       "
    }
  ]
}

This palette combines the richness of dark purple with the elegance of gold and the softness of cream and blush, complemented by a deep charcoal gray for a sophisticated touch.

Would you like to explore more color options or any particular elements for your event?