![](https://media.dog-learn.com/images/xoloitzcuintle-sz7.jpg)
![](https://media.dog-learn.com/images/irish-wolfhound-sz7.jpg)
![](https://media.dog-learn.com/images/gray-irish-wolfhound-sz7.jpg)
![](https://media.dog-learn.com/images/xoloitzcuintle-mds-sz7.jpg)
![](https://media.dog-learn.com/images/chow-chow-puppy-sz7.jpg)
![](https://media.dog-learn.com/images/italian-greyhound-running-sz7.jpg)
![](https://media.dog-learn.com/images/blue-neapolitan-mastiff-sz7.jpg)
![](https://media.dog-learn.com/images/great-dane-puppy-running-sz7.jpg)
![](https://media.dog-learn.com/images/blue-chow-chow-sz7.jpg)
Dark blue is the second darkest coat color in dogs (only black coats are darker). Breeds with dark blue coats inherit a gene that causes black pigmentation to be muted. The result is a greyish coloring which is distinct from other grey colors and resembles a blue tint.