Here is a monochromatic blue color palette for you:

json
{
  "palette_name": "Monochromatic Blue",
  "colors": [
    {
      "name": "Light Blue",
      "hex_code": "
                            
                            #ADD8E6
                        "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
                            
                            #87CEEB
                        "
    },
    {
      "name": "Dodger Blue",
      "hex_code": "
                            
                            #1E90FF
                        "
    },
    {
      "name": "Royal Blue",
      "hex_code": "
                            
                            #4169E1
                        "
    },
    {
      "name": "Medium Blue",
      "hex_code": "
                            
                            #0000CD
                        "
    },
    {
      "name": "Dark Blue",
      "hex_code": "
                            
                            #00008B
                        "
    }
  ]
}

This palette features a range of blue tones from light to dark, perfect for creating a cohesive and elegant design with a monochromatic theme.

Would you like to explore a specific application for this palette, or do you have any other color requests?