Here’s a soothing color palette based on your requirements for a customized Excel theme featuring calming blues, greens, and oranges:

json
{
  "palette_name": "Soothing Excel Theme",
  "colors": [
    {
      "name": "Dark 1",
      "hex_code": "
                            
                            #002147
                        "
    },
    {
      "name": "Light 1",
      "hex_code": "
                            
                            #A3C6D4
                        "
    },
    {
      "name": "Dark 2",
      "hex_code": "
                            
                            #004B3D
                        "
    },
    {
      "name": "Light 2",
      "hex_code": "
                            
                            #B8E1C0
                        "
    },
    {
      "name": "Accent 1",
      "hex_code": "
                            
                            #FFB74D
                        "
    },
    {
      "name": "Accent 2",
      "hex_code": "
                            
                            #FF8A65
                        "
    },
    {
      "name": "Accent 3",
      "hex_code": "
                            
                            #64B5F6
                        "
    },
    {
      "name": "Accent 4",
      "hex_code": "
                            
                            #81C784
                        "
    },
    {
      "name": "Accent 5",
      "hex_code": "
                            
                            #FFB74D
                        "
    },
    {
      "name": "Accent 6",
      "hex_code": "
                            
                            #FFCC80
                        "
    },
    {
      "name": "Hyperlink",
      "hex_code": "
                            
                            #1E88E5
                        "
    },
    {
      "name": "Followed Hyperlink",
      "hex_code": "
                            
                            #BBDEFB
                        "
    }
  ]
}

This palette consists of calming shades that can help create a pleasant working environment in Excel. The darker colors will provide a good contrast for text, while the lighter shades and accents add a touch of warmth and vibrancy.

Would you like any adjustments to this palette or do you have any other colors in mind?