This is a darker version of the original Nord theme for VSCode from here. Darker in this context means that the Polar Night color pallete is a little darker to create higher contrast between background and foreground colors. Everything else remains the same.
The original colors:
#2E3440 #3B4252 #434C5E #4C566A
The darker colors:
#242833 #2E3440 #3B4252 #434C5E