Here is a color palette inspired by a 1950s rainbow gradient that will stand out on a black background.

json
{
  "palette_name": "1950s Rainbow Gradient",
  "colors": [
    {
      "name": "Cherry Red",
      "hex_code": "
          
          #E63946
       "
    },
    {
      "name": "Tangerine",
      "hex_code": "
          
          #F1FA8C
       "
    },
    {
      "name": "Lemon Yellow",
      "hex_code": "
          
          #F1C40F
       "
    },
    {
      "name": "Mint Green",
      "hex_code": "
          
          #2ECC71
       "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #3498DB
       "
    },
    {
      "name": "Electric Blue",
      "hex_code": "
          
          #1F9BF0
       "
    },
    {
      "name": "Violet",
      "hex_code": "
          
          #8E44AD
       "
    },
    {
      "name": "Magenta",
      "hex_code": "
          
          #E91E63
       "
    }
  ]
}

This palette features vibrant colors reminiscent of the 1950s aesthetic, ensuring they pop against a black background. Do you need any specific shades or additional colors?