The hex color #20148b is a dark color. The web-safe version is Hex
#330099. A complementary color is
#DFEB74. The grayscale version is
#404040. A 20% lighter version of the original color is
#5347BE, and Hex
#000058 is the 20% darker color. If the color is saturated by 10%, you get
#1D1093. If the color is desaturated by 10%, the color
#231883 is obtained.