Here’s a color palette featuring 12 shades of blue that can be effectively used for a website design. The palette ranges from light to dark tones, providing versatility for various design elements such as backgrounds, buttons, and text.

### Blue Color Palette

1. **Sky Blue**
   - **Hex Code:** 
                            
                            #87CEEB
                        
   - **Description:** A bright and uplifting blue reminiscent of a clear sky. Ideal for backgrounds and highlights.

2. **Light Blue**
   - **Hex Code:** 
                            
                            #ADD8E6
                        
   - **Description:** A soft and soothing blue that works well for secondary elements and backgrounds.

3. **Powder Blue**
   - **Hex Code:** 
                            
                            #B0E0E6
                        
   - **Description:** A muted blue that offers a gentle touch, suitable for card backgrounds and soft accents.

4. **Steel Blue**
   - **Hex Code:** 
                            
                            #4682B4
                        
   - **Description:** A grayish-blue perfect for headers and navigation bars, providing a modern feel.

5. **Dodger Blue**
   - **Hex Code:** 
                            
                            #1E90FF
                        
   - **Description:** A vibrant and lively blue that stands out, making it great for call-to-action buttons.

6. **Cornflower Blue**
   - **Hex Code:** 
                            
                            #6495ED
                        
   - **Description:** A medium shade of blue that evokes a sense of calm and can be used for links and text accents.

7. **Royal Blue**
   - **Hex Code:** 
                            
                            #4169E1
                        
   - **Description:** A strong and bold blue that commands attention, suitable for important elements and highlights.

8. **Medium Slate Blue**
   - **Hex Code:** 
                            
                            #7B68EE
                        
   - **Description:** A slightly purple-tinged blue that adds elegance, perfect for creative or artistic website designs.

9. **Slate Blue**
   - **Hex Code:** 
                            
                            #6A5ACD
                        
   - **Description:** A darker blue with hints of purple, ideal for footers and contrasting elements.

10. **Navy Blue**
    - **Hex Code:** 
                            
                            #000080
                        
    - **Description:** A deep and classic blue, great for backgrounds or text where readability and sophistication are key.

11. **Teal Blue**
    - **Hex Code:** 
                            
                            #008080
                        
    - **Description:** A blend of blue and green that provides a refreshing contrast, suitable for accents and buttons.

12. **Light Steel Blue**
    - **Hex Code:** 
                            
                            #B0C4DE
                        
    - **Description:** A pale blue that is elegant and understated, perfect for backgrounds and light text.

### Palette Description:
This blue color palette offers a wide range of shades that can be used to create a visually appealing website. From light and airy hues that evoke a sense of freshness to deep, rich tones that convey professionalism and stability, this collection provides designers with the tools to balance vibrancy and calmness. Each color can be strategically utilized to create hierarchy, improve user experience, and enhance aesthetic appeal on web pages.