The hex color #000084 is a dark color. The web-safe version is Hex
#000099. A complementary color is
#FFFF7B. The grayscale version is
#2C2C2C. A 20% lighter version of the original color is
#3333B7, and Hex
#000051 is the 20% darker color. If the color is saturated by 10%, you get
#00008D. If the color is desaturated by 10%, the color
#04047B is obtained.