Here’s a vibrant color palette that meets your criteria for visibility on both white and black backgrounds:

json
{
  "palette_name": "Vibrant Contrast",
  "colors": [
    {
      "name": "Coral",
      "hex_code": "
                            
                            #FF6F61
                        "
    },
    {
      "name": "Turquoise",
      "hex_code": "
                            
                            #00B2A9
                        "
    },
    {
      "name": "Goldenrod",
      "hex_code": "
                            
                            #DAA520
                        "
    },
    {
      "name": "Slate Blue",
      "hex_code": "
                            
                            #6A5ACD
                        "
    },
    {
      "name": "Tomato",
      "hex_code": "
                            
                            #FF6347
                        "
    },
    {
      "name": "Medium Sea Green",
      "hex_code": "
                            
                            #3CB371
                        "
    },
    {
      "name": "Crimson",
      "hex_code": "
                            
                            #DC143C
                        "
    },
    {
      "name": "Royal Blue",
      "hex_code": "
                            
                            #4169E1
                        "
    }
  ]
}

Palette Description:
The “Vibrant Contrast” palette features 8 distinct colors that are vibrant yet balanced, ensuring they are neither overly bright nor too deep. These colors have been selected for their ability to stand out against both white and black backgrounds, making them suitable for various design contexts. Each color offers a unique hue while maintaining visibility and legibility.

Would you like to know more about how to use these colors, or do you need additional options?