To create a harmonious color palette that avoids extreme contrasts while ensuring that colors complement each other, we can use the HSL (Hue, Saturation, Lightness) color model. I’ll select colors that are evenly spaced around the color wheel, based on harmonious angles (e.g., 30° or 60° apart), while maintaining a vibrant yet balanced look.

Here is the refined color palette, calculated to ensure harmony among the colors while including your locked colors:

json
{
  "palette_name": "Harmonious Baby Event Palette",
  "colors": [
    {
      "name": "Locked Light Gray",
      "hex_code": "
                            
                            #FAFAFA
                        "
    },
    {
      "name": "Locked Dark Gray",
      "hex_code": "
                            
                            #101010
                        "
    },
    {
      "name": "Locked Sleep Blue",
      "hex_code": "
                            
                            #3036DB
                        "
    },
    {
      "name": "Vibrant Red",
      "hex_code": "
                            
                            #D50000
                        "
    },
    {
      "name": "Bright Orange",
      "hex_code": "
                            
                            #FF8C00
                        "
    },
    {
      "name": "Golden Yellow",
      "hex_code": "
                            
                            #FFEA00
                        "
    },
    {
      "name": "Lively Green",
      "hex_code": "
                            
                            #4CAF50
                        "
    },
    {
      "name": "Cool Cyan",
      "hex_code": "
                            
                            #00BFFF
                        "
    },
    {
      "name": "Bright Violet",
      "hex_code": "
                            
                            #8A2BE2
                        "
    },
    {
      "name": "Soft Coral",
      "hex_code": "
                            
                            #FF6F61
                        "
    },
    {
      "name": "Warm Magenta",
      "hex_code": "
                            
                            #D5006D
                        "
    },
    {
      "name": "Rich Turquoise",
      "hex_code": "
                            
                            #008B8B
                        "
    }
  ]
}

Explanation of the Palette:

• Harmonious Colors: Each color is chosen to be approximately 30° to 60° apart in the color wheel to maintain vibrancy while ensuring that they harmonize well together.
• Locked Colors: The three locked colors are included as specified.
• Vibrant Yet Balanced: The selected colors aim to provide enough vibrancy without being overly extreme, making them suitable for various event logs in your app.

Would you like to further adjust this palette, or do you have any other features or specifications for your app that you would like to discuss?