Here is a color palette featuring 15 types of yellow-green hues:

json
{
  "palette_name": "Yellow Green Variations",
  "colors": [
    {
      "name": "Lime Green",
      "hex_code": "
          
          #32CD32
       "
    },
    {
      "name": "Yellow Green",
      "hex_code": "
          
          #9ACD32
       "
    },
    {
      "name": "Chartreuse",
      "hex_code": "
          
          #7FFF00
       "
    },
    {
      "name": "Olive Drab",
      "hex_code": "
          
          #6B8E23
       "
    },
    {
      "name": "Dark Olive Green",
      "hex_code": "
          
          #556B2F
       "
    },
    {
      "name": "Medium Spring Green",
      "hex_code": "
          
          #00FA9A
       "
    },
    {
      "name": "Green Yellow",
      "hex_code": "
          
          #ADFF2F
       "
    },
    {
      "name": "Pale Green",
      "hex_code": "
          
          #98FB98
       "
    },
    {
      "name": "Yellow Green Crayola",
      "hex_code": "
          
          #A8B400
       "
    },
    {
      "name": "Moss Green",
      "hex_code": "
          
          #8A9A5B
       "
    },
    {
      "name": "Spring Green",
      "hex_code": "
          
          #00FF7F
       "
    },
    {
      "name": "Fern Green",
      "hex_code": "
          
          #4F7942
       "
    },
    {
      "name": "Avocado",
      "hex_code": "
          
          #56806F
       "
    },
    {
      "name": "Key Lime",
      "hex_code": "
          
          #D0E36C
       "
    },
    {
      "name": "Granny Smith Apple",
      "hex_code": "
          
          #A8E4A0
       "
    }
  ]
}

This palette showcases a range of yellow-green colors, from bright lime greens to more muted olive tones. Do you have a specific application in mind for these colors, or would you like to explore another type of color palette?