The hex color #1b0cee is a dark color. The web-safe version is Hex
#3300FF. A complementary color is
#E4F311. The grayscale version is
#5C5C5C. A 20% lighter version of the original color is
#4E3FFF, and Hex
#0000BB is the 20% darker color. If the color is saturated by 10%, you get
#1404FD. If the color is desaturated by 10%, the color
#2214DF is obtained.