Here’s a color palette that could work well for a web design, giving it a modern and clean look:

json
{
  "palette_name": "Modern Web Design",
  "colors": [
    {
      "name": "Deep Blue",
      "hex_code": "
          
          #1E3A8A
       "
    },
    {
      "name": "Soft Gray",
      "hex_code": "
          
          #F3F4F6
       "
    },
    {
      "name": "Vibrant Teal",
      "hex_code": "
          
          #14B8A6
       "
    },
    {
      "name": "Warm White",
      "hex_code": "
          
          #FFFFFF
       "
    },
    {
      "name": "Accent Coral",
      "hex_code": "
          
          #FB7185
       "
    }
  ]
}

This palette features a deep blue for headers and navigation, soft gray for backgrounds, vibrant teal as a primary action color, warm white for content areas, and coral for accents or alerts.

What specific features or sections do you envision for your web app?