For a sport nutrition and weight loss eCommerce website, we'll aim for a palette that inspires energy, trust, and motivation, while staying approachable and professional. Here's a vibrant yet balanced color palette:

1. **Energetic Orange** - 
                            
                            #F95700
                        
   - A vibrant and stimulating orange to evoke energy and enthusiasm. Perfect for call-to-action buttons and highlights.

2. **Vitality Teal** - 
                            
                            #17BEBB
                        
   - A fresh and invigorating teal symbolizing balance and wellness. Ideal for backgrounds and accents that require a touch of vibrancy without overwhelming.

3. **Optimistic Yellow** - 
                            
                            #FFC914
                        
   - A bright and cheerful yellow representing optimism and motivation. Use sparingly for attention-grabbing elements and notifications.

4. **Growth Green** - 
                            
                            #4C9A2A
                        
   - A rich, bold green that communicates growth, health, and prosperity. Great for icons and progress indicators.

5. **Trust Blue** - 
                            
                            #235789
                        
   - A deep blue conveying trust, reliability, and professionalism. Suitable for text and core elements to ensure readability and trustworthiness.

6. **Neutral Gray** - 
                            
                            #F4F4F4
                        
   - A light, neutral gray to provide balance and rest to the eyes. Perfect for backgrounds and areas where content needs to stand out without distraction.

**Palette Description:**
This palette combines vibrant and motivating colors with trustworthy and balanced tones to create an environment that encourages energy, trust, and motivation. The Energetic Orange and Optimistic Yellow spark action and positivity, while the Vitality Teal and Growth Green emphasize balance and health. Trust Blue ensures a foundation of reliability and professionalism, and Neutral Gray offers a calm backdrop to let the content shine. Together, these colors create a dynamic and inviting experience for users interested in sports nutrition and weight loss.