Here’s a color palette based on your request:

1. Main Color: #10a573 (a vibrant green).
2. Darker Dusty Green: #4B8A6D (a muted, darker green).
3. Bright Pink: #FF4F81 (a bright pink that falls between coral and barbie pink).
4. Sand Color: #D4C29A (a soft sand color).

Here’s the JSON representation of the color palette:

json
{
  "palette_name": "Tropical Oasis",
  "colors": [
    {
      "name": "Vibrant Green",
      "hex_code": "
                            
                            #10a573
                        "
    },
    {
      "name": "Dusty Green",
      "hex_code": "
                            
                            #4B8A6D
                        "
    },
    {
      "name": "Coral Barbie Pink",
      "hex_code": "
                            
                            #FF4F81
                        "
    },
    {
      "name": "Soft Sand",
      "hex_code": "
                            
                            #D4C29A
                        "
    }
  ]
}

This palette combines a lively green with muted tones and a bright pop of pink, balanced by a calming sand color to evoke a fresh and vibrant tropical vibe.

Would you like to see more color options or any specific combinations?