### Sandcastle Color Palette

1. **Sandy Beige**
   - **Hex Code:** 
                            
                            #D6CFC4
                        
   - **Description:** A soft, warm beige reminiscent of fine sand, perfect for creating a tranquil and natural atmosphere.

2. **Seashell Pink**
   - **Hex Code:** 
                            
                            #F4C8C7
                        
   - **Description:** A delicate pink with subtle undertones, reflecting the gentle blush of seashells found along the shore.

3. **Driftwood Gray**
   - **Hex Code:** 
                            
                            #AFAEAB
                        
   - **Description:** A muted gray that evokes the weathered look of driftwood, adding an earthy and rustic element to the palette.

4. **Ocean Blue**
   - **Hex Code:** 
                            
                            #A3C1DA
                        
   - **Description:** A soothing blue that captures the essence of clear ocean waters, bringing a refreshing and serene touch to the palette.

5. **Sunset Orange**
   - **Hex Code:** 
                            
                            #FFB04C
                        
   - **Description:** A warm, vibrant orange that mirrors the colors of a sunset, adding a cheerful and inviting warmth to the composition.

6. **Coral Reef**
   - **Hex Code:** 
                            
                            #FF6F61
                        
   - **Description:** A lively coral hue that adds a pop of color, reminiscent of the vibrant marine life found in coastal waters.

### Palette Summary:
This "Sandcastle" color palette combines warm neutrals and natural tones with soft pastels and vibrant accents, inspired by the beach and coastal landscapes. It creates a harmonious and inviting atmosphere, perfect for designs that evoke feelings of relaxation and joy associated with seaside adventures.