Here is a color palette based on your description:

json
{
  "palette_name": "Calm Professional",
  "colors": [
    {
      "name": "Dark Trust",
      "hex_code": "
                            
                            #2C3E50
                        "
    },
    {
      "name": "Lighter Secondary",
      "hex_code": "
                            
                            #34495E
                        "
    },
    {
      "name": "Soft Blue",
      "hex_code": "
                            
                            #4A6FA5
                        "
    },
    {
      "name": "Gentle Aqua",
      "hex_code": "
                            
                            #5DADE2
                        "
    },
    {
      "name": "Light Background",
      "hex_code": "
                            
                            #ECF0F1
                        "
    }
  ]
}

This palette features a sophisticated dark blue for a strong foundation, a slightly lighter secondary blue for supporting elements, a soft blue for links and hover effects, a gentle aqua for vibrant yet calm CTAs, and a light background to maintain openness and readability.

Would you like to discuss how to apply this palette in your design, or explore additional color options?