The hex color #000321 is a dark color. The web-safe version is Hex
#000033. A complementary color is
#FFFCDE. The grayscale version is
#0C0C0C. A 20% lighter version of the original color is
#333654, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#000223. If the color is desaturated by 10%, the color
#01041F is obtained.