Adding a light grey can indeed complement the “Waterfall Bliss” palette by providing a neutral base that balances the vibrant blues and yellows. Here’s an updated version of the color palette including light grey:

 <Waterfall Bliss Enhanced> 
1. Aqua Blue - 
                            
                            #00BFFF
                         - A bright, clear blue reminiscent of sparkling water in a waterfall.
2. Deep Sky Blue - 
                            
                            #00BFFF
                         - A vibrant blue that captures the essence of rushing water.
3. Soft Turquoise - 
                            
                            #40E0D0
                         - A soothing color that reflects the gentle flow of water.
4. Golden Yellow - 
                            
                            #FFD700
                         - A warm, sunny yellow that evokes the sunlight reflecting off the water.
5. Pale Lemon - 
                            
                            #FFFACD
                         - A soft, light yellow that adds a gentle highlight to the palette.
6. Light Grey - 
                            
                            #D3D3D3
                         - A soft, neutral grey that provides a calming contrast and enhances the vibrancy of the blues and yellows.

The “Waterfall Bliss Enhanced” palette maintains the refreshing feel of the original while introducing light grey as a versatile neutral that can help to soften the overall design.

What do you think of this addition? Are you looking for any specific shades of grey or other colors to complement the palette further?