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?