Here is a color palette based on your query for blue marine, brown, and black.

json
{
  "palette_name": "Ocean Depths",
  "colors": [
    {
      "name": "Marine Blue",
      "hex_code": "
                            
                            #0077B3
                        "
    },
    {
      "name": "Rich Brown",
      "hex_code": "
                            
                            #6F4C3E
                        "
    },
    {
      "name": "Jet Black",
      "hex_code": "
                            
                            #000000
                        "
    }
  ]
}

This palette, named “Ocean Depths,” captures the essence of deep ocean waters with the marine blue, complemented by rich brown reminiscent of the sea floor, and accented with the depth of jet black.

Would you like to explore more color combinations or have any specific applications in mind for this palette?