<Dark Grey and Light Blue>
1. Dark Grey - 
                            
                            #4A4A4A
                         - A deep, muted grey that offers a strong and sophisticated base.
2. Light Blue - 
                            
                            #A4C8E1
                         - A soft, calming light blue that adds a refreshing contrast to the dark grey.
3. Steel Blue - 
                            
                            #4682B4
                         - A medium-dark shade of blue that complements the light blue while maintaining a cool tone.
4. Charcoal - 
                            
                            #333333
                         - A darker shade of grey that enhances depth and can be used for text or accent elements.
5. Sky Blue - 
                            
                            #87CEEB
                         - A brighter, airy blue that can provide highlights and visual interest without overwhelming the palette.

This color palette combines a strong, sophisticated dark grey with calming light blue tones, creating a balanced and modern look. It can be suitable for various applications, including websites, branding, and user interfaces, where a professional yet serene aesthetic is desired.

What type of project are you planning to use this color palette for?