The hex color #010b1f is a dark color. The web-safe version is Hex
#000033. A complementary color is
#FEF4E0. The grayscale version is
#0E0E0E. A 20% lighter version of the original color is
#343E52, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#000B21. If the color is desaturated by 10%, the color
#020B1D is obtained.