The hex color #20137f is a dark color. The web-safe version is Hex
#330066. A complementary color is
#DFEC80. The grayscale version is
#3B3B3B. A 20% lighter version of the original color is
#5346B2, and Hex
#00004C is the 20% darker color. If the color is saturated by 10%, you get
#1D0F86. If the color is desaturated by 10%, the color
#231778 is obtained.