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!