Here is a color palette based on your specifications for a girl-themed Fandom wiki light mode:

json
{
  "palette_name": "Girl-Themed Fandom Wiki Light Mode",
  "colors": [
    {
      "name": "Community Header",
      "hex_code": "
                            
                            #DE6586
                        "
    },
    {
      "name": "Article Background",
      "hex_code": "
                            
                            #FFB2C1
                        "
    },
    {
      "name": "Community Background",
      "hex_code": "
                            
                            #FF9AA2
                        "
    },
    {
      "name": "Sticky Nav",
      "hex_code": "
                            
                            #FF7A8A
                        "
    },
    {
      "name": "Accent Colour",
      "hex_code": "
                            
                            #FF6F81
                        "
    },
    {
      "name": "Community Text Colour",
      "hex_code": "
                            
                            #FFCED1
                        "
    },
    {
      "name": "Link Colour",
      "hex_code": "
                            
                            #A77BCA
                        "
    }
  ]
}

Palette Description:
This palette is designed to create a vibrant and inviting atmosphere for a girl-themed Fandom wiki in light mode. The primary community header color is a bright coral pink ( #DE6586 ), ensuring it stands out. The article background is a soft pastel pink ( #FFB2C1 ), providing a gentle backdrop for content. Complementing this are shades of pink for the community background ( #FF9AA2 ), sticky navigation bar ( #FF7A8A ), and accent colors ( #FF6F81 ) that maintain a cohesive aesthetic. A light pink ( #FFCED1 ) is chosen for community text to enhance readability, while a soft purple ( #A77BCA ) is used for links, adding a playful touch to the overall design.

Would you like to adjust any colors or add more elements to the palette?