Color Palette:

1. Color Name: Bubblegum Pink
   Hex Code: 
                            
                            #FF69B4
                        
   Palette Description: This vibrant and playful pink color is perfect for creating a fun and engaging atmosphere on a young children's website. It exudes energy and excitement, appealing to the target audience.

2. Color Name: Sunshine Yellow
   Hex Code: 
                            
                            #FFD700
                        
   Palette Description: The bright and cheerful yellow color brings warmth and positivity to the website design. It creates a welcoming and joyful environment that captures the attention of young children, making them feel happy and comfortable.

3. Color Name: Sky Blue
   Hex Code: 
                            
                            #87CEEB
                        
   Palette Description: This soothing and calming shade of blue reminiscent of a clear sky promotes a sense of tranquility and peace. It provides a balanced contrast to the vibrant pink and yellow, ensuring a visually pleasing experience for young children.

4. Color Name: Grass Green
   Hex Code: 
                            
                            #7CFC00
                        
   Palette Description: The fresh and lively green color represents nature and growth, symbolizing learning and development. It adds a touch of vibrancy and complements the other colors in the palette, creating a harmonious and engaging visual experience.

This accessible 4-color palette for a young children's website combines vibrant and playful colors with soothing and calming tones, capturing the attention of children while maintaining a balanced and visually appealing design.