Here is a color palette based on your specifications for a GHW Fandom wiki dark mode:

json
{
  "palette_name": "GHW Fandom Wiki Dark Mode",
  "colors": [
    {
      "name": "Community Header",
      "hex_code": "
                            
                            #8bc8fa
                        "
    },
    {
      "name": "Community Text",
      "hex_code": "
                            
                            #A7C0E9
                        "
    },
    {
      "name": "Article Background",
      "hex_code": "
                            
                            #301934
                        "
    },
    {
      "name": "Accent Color",
      "hex_code": "
                            
                            #9C27B0
                        "
    },
    {
      "name": "Sticky Nav",
      "hex_code": "
                            
                            #6A1B9A
                        "
    },
    {
      "name": "Link Color",
      "hex_code": "
                            
                            #E040FB
                        "
    },
    {
      "name": "Community Background",
      "hex_code": "
                            
                            #4A148C
                        "
    }
  ]
}

This palette combines vibrant and contrasting colors suitable for a dark mode theme, ensuring that the community header stands out while maintaining readability and aesthetic appeal.

Would you like to know more about how to implement this palette or any other details?