Based on the provided colors, here’s a cohesive color palette that embodies softness and tranquility:

 <Soft Serenity>
1. Soft Ivory - 
                            
                            #F8F4EC
                         - A gentle and warm off-white that serves as a perfect backdrop for other colors.
2. Warm Gray - 
                            
                            #D3CBC5
                         - A soothing gray that adds depth and balance, complementing the lighter tones.
3. Powder Blue - 
                            
                            #BFD7EA
                         - A light and airy blue that evokes feelings of calmness and peace.
4. Blush Pink - 
                            
                            #F4D7DA
                         - A soft and delicate pink that adds a touch of warmth and femininity to the palette.

This palette is perfect for designs that aim to create a serene and inviting atmosphere, making it ideal for wellness brands, beauty products, or cozy home decor.

What type of project are you considering using this color palette for? Or would you like adjustments or additional colors?