Here is a color palette inspired by the color you provided ( #003B5C ):

json
{
  "palette_name": "Deep Ocean",
  "colors": [
    {
      "name": "Deep Sea Blue",
      "hex_code": "
                            
                            #003B5C
                        "
    },
    {
      "name": "Teal Blue",
      "hex_code": "
                            
                            #007B7F
                        "
    },
    {
      "name": "Midnight Navy",
      "hex_code": "
                            
                            #001F3F
                        "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
                            
                            #00BFFF
                        "
    },
    {
      "name": "Light Sea Green",
      "hex_code": "
                            
                            #20B2AA
                        "
    }
  ]
}

This palette showcases various shades of blue and green, creating a harmonious and calming atmosphere reminiscent of deep ocean waters.

What do you think of this palette? Are you looking for more variations or perhaps specific combinations for a project?