Here is a color palette designed for a developer portfolio site with a black theme and blue color accents:

json
{
  "palette_name": "Black & Blue Developer Portfolio",
  "colors": [
    {
      "name": "Jet Black",
      "hex_code": "
          
          #343A40
       "
    },
    {
      "name": "Rich Black",
      "hex_code": "
          
          #1A1A1A
       "
    },
    {
      "name": "Electric Blue",
      "hex_code": "
          
          #007BFF
       "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #5BC0DE
       "
    },
    {
      "name": "Cool Gray",
      "hex_code": "
          
          #6C757D
       "
    }
  ]
}

Palette Description

This palette features a dominant jet black and rich black background to create a sleek and modern look. Electric blue and sky blue serve as vibrant accent colors to highlight important elements and provide contrast, while cool gray adds a balanced neutral tone for text and secondary elements.

Would you like suggestions on how to apply this palette to your site or any specific elements you want to focus on?