Here is a color palette based on your requirements:

json
{
  "palette_name": "Bright & Cool Contrast",
  "colors": [
    {
      "name": "Bright Pink",
      "hex_code": "
                            
                            #FF3D8A
                        "
    },
    {
      "name": "Dark Blue",
      "hex_code": "
                            
                            #003366
                        "
    },
    {
      "name": "Cool Green Light",
      "hex_code": "
                            
                            #A8E6CF
                        "
    },
    {
      "name": "Cool Green Dark",
      "hex_code": "
                            
                            #4DB6AC
                        "
    },
    {
      "name": "Yellow Cream",
      "hex_code": "
                            
                            #F9E79F
                        "
    }
  ]
}

Palette Description:

• Bright Pink: A vibrant pink suitable for your wordmark that provides a lively contrast against both white and black backgrounds.
• Dark Blue: A deep, rich blue that works well for text, ensuring readability against the brighter colors.
• Cool Green Light: A soft, light green that contrasts beautifully with white, adding a refreshing touch to your design.
• Cool Green Dark: A deeper shade of green to complement the lighter green, maintaining harmony in your palette.
• Yellow Cream: A warm, yellowish cream color that adds a soft, inviting element to the overall look.

Would you like to explore additional shades or variations for any of these colors?