Here is a vibrant saturated 1950’s rainbow gradient color palette suitable for a logo that stands out on a black background:

json
{
  "palette_name": "Saturated 1950's Rainbow",
  "colors": [
    {
      "name": "Crimson Red",
      "hex_code": "
          
          #FF3D00
       "
    },
    {
      "name": "Sunshine Yellow",
      "hex_code": "
          
          #FFD600
       "
    },
    {
      "name": "Lime Green",
      "hex_code": "
          
          #AEEA00
       "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #00B0FF
       "
    },
    {
      "name": "Electric Violet",
      "hex_code": "
          
          #8C2BD0
       "
    },
    {
      "name": "Hot Pink",
      "hex_code": "
          
          #FF4081
       "
    },
    {
      "name": "Bright Orange",
      "hex_code": "
          
          #FF6D00
       "
    },
    {
      "name": "Turquoise",
      "hex_code": "
          
          #1DE9B6
       "
    }
  ]
}

This color palette combines bright and saturated colors reminiscent of the 1950s, ensuring excellent contrast against a black background for a striking logo design.

Do you have any specific design elements or themes in mind for your logo, or any other preferences for the palette?