Here is a color palette based on your requirements, including the specified colors and additional colors to complement them.

json
{
  "palette_name": "App Color Palette",
  "colors": [
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #DDF5F8
       "
    },
    {
      "name": "Pale Yellow",
      "hex_code": "
          
          #FEFFA2
       "
    },
    {
      "name": "Vibrant Green",
      "hex_code": "
          
          #4CAF50
       "
    },
    {
      "name": "Terracotta",
      "hex_code": "
          
          #D76B30
       "
    },
    {
      "name": "Light Green",
      "hex_code": "
          
          #A8E6CE
       "
    },
    {
      "name": "Bright Orange",
      "hex_code": "
          
          #FF5722
       "
    },
    {
      "name": "Light Grey",
      "hex_code": "
          
          #E0E0E0
       "
    },
    {
      "name": "Dark Grey",
      "hex_code": "
          
          #424242
       "
    }
  ]
}

Palette Description

This palette combines calming and bright shades, with Sky Blue and Pale Yellow as the primary colors, complemented by Vibrant Green and Terracotta for a warm touch. The secondary colors, which include Light Green and Bright Orange, add vibrancy, while the greys provide a neutral balance to the overall design.

Would you like to make any adjustments or need additional colors?