BudsGunShop.com - Color

It is Black, basically. Bluing or black oxidizing is a process of treating steel to create a thin protective shell around it. It works by turning rust, into black iron oxide. The blue-black image of black iron oxide is what gives the name to this process. It can be performed on gun barrels and other firearm components.

the finish looks black blue is an electrochemical conversion coating process in which steel is partially protected against
rust, and is named after the blue-black appearance of the resulting protective finish

Hi Charles, the color is simply 'black'.
Stay safe & have a great day!

Hi Charles and welcome. The color is actually Black. Blue is an old term for finish which would be Black for most modern firearms. Cheers, stay safe and enjoy!