Here's a color palette designed to pair beautifully with the specified colors: **
          
          #33CCFF
       ** (Sky Blue), **
          
          #C6D9F1
       ** (Light Periwinkle), and **
          
          #80B918
       ** (Lime Green) on a light background. This palette includes six harmonious colors that complement and enhance the original choices.

### Color Palette

1. **Sky Blue**  
   - **Hex:** 
          
          #33CCFF
         
   - **Description:** A vibrant and refreshing blue that brings a sense of calm and clarity.

2. **Light Periwinkle**  
   - **Hex:** 
          
          #C6D9F1
         
   - **Description:** A soft, airy shade that adds a gentle touch of tranquility, perfect for backgrounds.

3. **Lime Green**  
   - **Hex:** 
          
          #80B918
         
   - **Description:** A zesty and lively green that injects energy and optimism into the palette.

4. **Coral Pink**  
   - **Hex:** 
          
          #FF6F61
         
   - **Description:** A warm and inviting coral that provides a beautiful contrast, adding warmth to the palette.

5. **Soft Lavender**  
   - **Hex:** 
          
          #E1C6E6
         
   - **Description:** A delicate lavender that introduces a subtle touch of elegance and complements the blues.

6. **Creamy White**  
   - **Hex:** 
          
          #F8F8F0
         
   - **Description:** A warm off-white that enhances the lightness of the palette, perfect for backgrounds and spaces.

### Palette Summary
This palette combines cool tones with warm accents, creating a balanced and visually appealing assortment that works well on a light background. The blues and greens promote a refreshing vibe, while the coral and lavender add warmth and elegance, making it suitable for various design applications from branding to web design.