The hex color #00020b is a dark color. The web-safe version is Hex
#000000. A complementary color is
#FFFDF4. The grayscale version is
#040404. A 20% lighter version of the original color is
#33353E, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#00020C. If the color is desaturated by 10%, the color
#00020A is obtained.