<Darker Shades of 
                            
                            #4169E1
                        >
1. Dark Blue - 
                            
                            #1F2F53
                         - a deep, rich blue
2. Midnight Blue - 
                            
                            #191970
                         - a dark, almost blackish blue
3. Navy - 
                            
                            #000080
                         - a classic deep blue
4. Royal Blue - 
                            
                            #002366
                         - a regal, dark blue
5. Sapphire - 
                            
                            #0F52BA
                         - a jewel-toned dark blue

This color palette consists of darker shades of the original color #4169E1 , ranging from deep blues to almost blackish tones.

Do you have a specific use case or project in mind for this color palette?