Here is a color palette featuring 50 shades of blue:

json
{
  "palette_name": "Shades of Blue",
  "colors": [
    {"name": "Sky Blue", "hex_code": "
          
          #87CEEB
       "},
    {"name": "Light Sky Blue", "hex_code": "
          
          #87CEFA
       "},
    {"name": "Deep Sky Blue", "hex_code": "
          
          #00BFFF
       "},
    {"name": "Dodger Blue", "hex_code": "
          
          #1E90FF
       "},
    {"name": "Cornflower Blue", "hex_code": "
          
          #6495ED
       "},
    {"name": "Medium Slate Blue", "hex_code": "
          
          #7B68EE
       "},
    {"name": "Royal Blue", "hex_code": "
          
          #4169E1
       "},
    {"name": "Blue", "hex_code": "
          
          #0000FF
       "},
    {"name": "Medium Blue", "hex_code": "
          
          #0000CD
       "},
    {"name": "Dark Blue", "hex_code": "
          
          #00008B
       "},
    {"name": "Navy", "hex_code": "
          
          #000080
       "},
    {"name": "Slate Blue", "hex_code": "
          
          #6A5ACD
       "},
    {"name": "Steel Blue", "hex_code": "
          
          #4682B4
       "},
    {"name": "Light Steel Blue", "hex_code": "
          
          #B0C4DE
       "},
    {"name": "Powder Blue", "hex_code": "
          
          #B0E0E6
       "},
    {"name": "Light Blue", "hex_code": "
          
          #ADD8E6
       "},
    {"name": "Alice Blue", "hex_code": "
          
          #F0F8FF
       "},
    {"name": "Cyan", "hex_code": "
          
          #00FFFF
       "},
    {"name": "Light Cyan", "hex_code": "
          
          #E0FFFF
       "},
    {"name": "Turquoise", "hex_code": "
          
          #40E0D0
       "},
    {"name": "Medium Turquoise", "hex_code": "
          
          #48D1CC
       "},
    {"name": "Dark Turquoise", "hex_code": "
          
          #00CED1
       "},
    {"name": "Teal", "hex_code": "
          
          #008080
       "},
    {"name": "Dark Slate Blue", "hex_code": "
          
          #483D8B
       "},
    {"name": "Cadet Blue", "hex_code": "
          
          #5F9EA0
       "},
    {"name": "Light Sea Green", "hex_code": "
          
          #20B2AA
       "},
    {"name": "Aquamarine", "hex_code": "
          
          #7FFFD4
       "},
    {"name": "Medium Aquamarine", "hex_code": "
          
          #66CDAA
       "},
    {"name": "Dark Cyan", "hex_code": "
          
          #008B8B
       "},
    {"name": "Light Steel Blue", "hex_code": "
          
          #B0C4DE
       "},
    {"name": "Violet Blue", "hex_code": "
          
          #8A2BE2
       "},
    {"name": "Baby Blue", "hex_code": "
          
          #89CFF0
       "},
    {"name": "Cerulean", "hex_code": "
          
          #007BA7
       "},
    {"name": "Capri", "hex_code": "
          
          #00BFFF
       "},
    {"name": "Electric Blue", "hex_code": "
          
          #7DF9FF
       "},
    {"name": "Ocean Blue", "hex_code": "
          
          #0077BE
       "},
    {"name": "Blueberry", "hex_code": "
          
          #4F86F7
       "},
    {"name": "Steel Blue", "hex_code": "
          
          #4682B4
       "},
    {"name": "Beryl", "hex_code": "
          
          #79B3C3
       "},
    {"name": "Light Blue", "hex_code": "
          
          #ADD8E6
       "},
    {"name": "Bright Blue", "hex_code": "
          
          #0096FF
       "},
    {"name": "Azure", "hex_code": "
          
          #F0FFFF
       "},
    {"name": "Sapphire", "hex_code": "
          
          #0F52BA
       "},
    {"name": "Cobalt Blue", "hex_code": "
          
          #0047AB
       "},
    {"name": "Dark Slate Gray", "hex_code": "
          
          #2F4F4F
       "},
    {"name": "Ice Blue", "hex_code": "
          
          #A3C1DA
       "},
    {"name": "Maya Blue", "hex_code": "
          
          #73C2FB
       "},
    {"name": "Periwinkle", "hex_code": "
          
          #CCCCFF
       "},
    {"name": "Blue Violet", "hex_code": "
          
          #8A2BE2
       "},
    {"name": "Light Slate Blue", "hex_code": "
          
          #8470FF
       "},
    {"name": "Dark Powder Blue", "hex_code": "
          
          #003366
       "},
    {"name": "Rich Blue", "hex_code": "
          
          #003DA5
       "},
    {"name": "Neon Blue", "hex_code": "
          
          #1B03A3
       "},
    {"name": "Dark Cerulean", "hex_code": "
          
          #08457E
       "},
    {"name": "Glacial Blue", "hex_code": "
          
          #A7C6D9
       "},
    {"name": "Blue Yonder", "hex_code": "
          
          #8AB8E6
       "}
  ]
}

This palette captures the vast diversity of blue shades, ranging from light and airy to deep and vibrant tones. Would you like to explore a specific shade further or need assistance with something else?