Here is a color palette tailored for a web application with a blue theme:

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

This palette features a range of blue shades, from light to dark, providing versatility for different aspects of your web application design.

Would you like any additional colors or suggestions for specific components like buttons or backgrounds?