To create more contrast between the orange background and the pink color, I’ve adjusted the orange to be more vibrant and distinct. Here’s the revised color palette:

json
{
  "palette_name": "Water-Inspired Flat Design with Vibrant Orange Background",
  "colors": [
    {
      "name": "Soft Pink",
      "hex_code": "
          
          #EFA3A3
       "
    },
    {
      "name": "Vibrant Orange",
      "hex_code": "
          
          #FF8C00
       "
    },
    {
      "name": "Pure White",
      "hex_code": "
          
          #FFFFFF
       "
    },
    {
      "name": "Baby Blue",
      "hex_code": "
          
          #A4D8E1
       "
    },
    {
      "name": "Deep Blue",
      "hex_code": "
          
          #005F85
       "
    },
    {
      "name": "Ocean Blue",
      "hex_code": "
          
          #007B9A
       "
    },
    {
      "name": "Navy Blue",
      "hex_code": "
          
          #003D5B
       "
    }
  ]
}

In this version, the orange has been changed to a vibrant hue ( #FF8C00 ), which should provide a better contrast against the soft pink color.

Would you like to see any further modifications or additions to this palette?