Here is a futuristic sci-fi color palette that complements the background color #1D0C31 , using primarily cool tones:

json
{
  "palette_name": "Futuristic Sci-Fi Cool Tones",
  "colors": [
    {
      "name": "Deep Space Blue",
      "hex_code": "
          
          #0B1C3A
       "
    },
    {
      "name": "Neon Aqua",
      "hex_code": "
          
          #00B2A9
       "
    },
    {
      "name": "Electric Purple",
      "hex_code": "
          
          #5B3CC4
       "
    },
    {
      "name": "Glacial Silver",
      "hex_code": "
          
          #A8C8E1
       "
    },
    {
      "name": "Cosmic Teal",
      "hex_code": "
          
          #008C9E
       "
    }
  ]
}

This palette features cool tones that evoke a sense of the futuristic and otherworldly, while the colors work harmoniously with the deep background color #1D0C31 .

Would you like to explore more options or variations for this palette?