Here are a few more color combinations that could work well with navy blue and mustard yellow:

Color Combination 1: Autumn Breeze

json
{
  "palette_name": "Autumn Breeze",
  "colors": [
    {
      "name": "Navy Blue",
      "hex_code": "
                            
                            #001F3F
                        "
    },
    {
      "name": "Mustard Yellow",
      "hex_code": "
                            
                            #FFCC00
                        "
    },
    {
      "name": "Burnt Orange",
      "hex_code": "
                            
                            #FF4500
                        "
    },
    {
      "name": "Olive Green",
      "hex_code": "
                            
                            #808000
                        "
    },
    {
      "name": "Cream",
      "hex_code": "
                            
                            #FFFDD0
                        "
    }
  ]
}

Color Combination 2: Coastal Charm

json
{
  "palette_name": "Coastal Charm",
  "colors": [
    {
      "name": "Navy Blue",
      "hex_code": "
                            
                            #001F3F
                        "
    },
    {
      "name": "Mustard Yellow",
      "hex_code": "
                            
                            #FFCC00
                        "
    },
    {
      "name": "Turquoise",
      "hex_code": "
                            
                            #40E0D0
                        "
    },
    {
      "name": "Coral",
      "hex_code": "
                            
                            #FF7F50
                        "
    },
    {
      "name": "Sand",
      "hex_code": "
                            
                            #C2B280
                        "
    }
  ]
}

Color Combination 3: Elegant Evening

json
{
  "palette_name": "Elegant Evening",
  "colors": [
    {
      "name": "Navy Blue",
      "hex_code": "
                            
                            #001F3F
                        "
    },
    {
      "name": "Mustard Yellow",
      "hex_code": "
                            
                            #FFCC00
                        "
    },
    {
      "name": "Burgundy",
      "hex_code": "
                            
                            #800000
                        "
    },
    {
      "name": "Champagne",
      "hex_code": "
                            
                            #F7E7CE
                        "
    },
    {
      "name": "Charcoal",
      "hex_code": "
                            
                            #36454F
                        "
    }
  ]
}

These combinations offer a range of styles, from warm autumn tones to vibrant coastal vibes and elegant evening aesthetics. Do any of these palettes resonate with you? Would you like more options or assistance with something else?