<Yu-Gi-Oh! Character Inspired Palette> 
1. Duelist Blue - 
                            
                            #005BAC
                         - A vibrant blue reminiscent of the iconic dueling arenas and the spirit of competition.
2. Dragon Red - 
                            
                            #FF1C1C
                         - A bold red representing the fierce spirit of the dragons, particularly the Blue-Eyes White Dragon.
3. Friendship Yellow - 
                            
                            #FFD700
                         - A warm yellow symbolizing the bonds of friendship shared among the characters.
4. Shadow Black - 
                            
                            #101820
                         - A deep black that embodies the darker themes of the series and the mysterious powers at play.
5. Duel Disk Gray - 
                            
                            #A9A9A9
                         - A neutral gray inspired by the technology of Duel Disks used in card battles.

This color palette reflects the vibrant, competitive nature of the Yu-Gi-Oh! universe while capturing the essence of the main characters and their relationships.

Would you like to explore specific applications for this palette, such as web design, merchandise, or a game interface?