Here is a color palette based on the “Dark Autumn” theme with dark blue, olive green, burgundy, and a shade of purple:

json
{
  "palette_name": "Dark Autumn Elegance",
  "colors": [
    {
      "name": "Dark Blue",
      "hex_code": "
                            
                            #001F3F
                        "
    },
    {
      "name": "Olive Green",
      "hex_code": "
                            
                            #4B5320
                        "
    },
    {
      "name": "Burgundy",
      "hex_code": "
                            
                            #800020
                        "
    },
    {
      "name": "Deep Purple",
      "hex_code": "
                            
                            #5C4B8A
                        "
    }
  ]
}

This palette encapsulates the richness of autumn with deep, warm tones and a touch of sophistication. Dark blue provides a strong base, while olive green adds an earthy feel. Burgundy brings warmth and depth, and deep purple introduces a hint of elegance.

Would you like to explore more colors or themes?