Here is a brighter 13-color palette that maintains a similar aesthetic to the previous soft palette while introducing more vibrant shades:

json
{
  "palette_name": "Bright Soft Contrast Spectrum",
  "colors": [
    {
      "name": "Bright Coral",
      "hex_code": "
                            
                            #FF6F61
                        "
    },
    {
      "name": "Light Sky Blue",
      "hex_code": "
                            
                            #87CEFA
                        "
    },
    {
      "name": "Fresh Green",
      "hex_code": "
                            
                            #90EE90
                        "
    },
    {
      "name": "Bright Yellow",
      "hex_code": "
                            
                            #FFFFE0
                        "
    },
    {
      "name": "Lilac",
      "hex_code": "
                            
                            #C8A2E8
                        "
    },
    {
      "name": "Light Peach",
      "hex_code": "
                            
                            #FFE5B4
                        "
    },
    {
      "name": "Light Steel Blue",
      "hex_code": "
                            
                            #B0C4DE
                        "
    },
    {
      "name": "Turquoise Blue",
      "hex_code": "
                            
                            #40E0D0
                        "
    },
    {
      "name": "Aqua",
      "hex_code": "
                            
                            #00FFFF
                        "
    },
    {
      "name": "Bright Lime",
      "hex_code": "
                            
                            #B2FF66
                        "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
                            
                            #87CEEB
                        "
    },
    {
      "name": "Tan",
      "hex_code": "
                            
                            #D2B48C
                        "
    },
    {
      "name": "Light Salmon",
      "hex_code": "
                            
                            #FFA07A
                        "
    }
  ]
}

This palette introduces brighter and more vivid colors while still retaining a soft overall feel. If you have further adjustments or specific applications for this palette, please let me know!