The hex color #1c20b6 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E3DF49. The grayscale version is
#515151. A 20% lighter version of the original color is
#4F53E9, and Hex
#000083 is the 20% darker color. If the color is saturated by 10%, you get
#171BC0. If the color is desaturated by 10%, the color
#2125AC is obtained.