Here is a vibrant 1970s rainbow gradient color palette designed to stand out on a black background:

json
{
  "palette_name": "1970s Rainbow Gradient",
  "colors": [
    {
      "name": "Vibrant Red",
      "hex_code": "
          
          #FF3D00
       "
    },
    {
      "name": "Bright Orange",
      "hex_code": "
          
          #FF6F00
       "
    },
    {
      "name": "Sunny Yellow",
      "hex_code": "
          
          #FFD600
       "
    },
    {
      "name": "Lime Green",
      "hex_code": "
          
          #AEEA00
       "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #00B0FF
       "
    },
    {
      "name": "Electric Blue",
      "hex_code": "
          
          #2979FF
       "
    },
    {
      "name": "Violet",
      "hex_code": "
          
          #AA00FF
       "
    },
    {
      "name": "Deep Magenta",
      "hex_code": "
          
          #D5006D
       "
    }
  ]
}

This palette captures the bold and vibrant colors characteristic of the 1970s while ensuring they remain visually striking against a black backdrop.

Do you have any specific design elements in mind for the logo, or would you like suggestions on how to apply this palette?