Based on the hex code provided (0A192F), here is a color palette that complements the deep navy color:

json
{
  "palette_name": "Midnight Depths",
  "colors": [
    {
      "name": "Deep Navy",
      "hex_code": "
          
          #0A192F
       "
    },
    {
      "name": "Steel Blue",
      "hex_code": "
          
          #1B2A6E
       "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #4C6EF5
       "
    },
    {
      "name": "Soft Gray",
      "hex_code": "
          
          #B7C9D9
       "
    },
    {
      "name": "White Smoke",
      "hex_code": "
          
          #F5F5F5
       "
    }
  ]
}

Palette Description:

This palette, named “Midnight Depths,” features a deep navy as its foundation, evoking a sense of tranquility and depth. The addition of steel blue and sky blue provides a refreshing contrast, while soft gray adds subtlety and white smoke introduces brightness, making this palette versatile for both modern and classic designs.

What do you think about this palette? Would you like to explore additional color options or specific themes?