The hex color #1b18f0 is a dark color. The web-safe version is Hex
#3300FF. A complementary color is
#E4E70F. The grayscale version is
#616161. A 20% lighter version of the original color is
#4E4BFF, and Hex
#0000BD is the 20% darker color. If the color is saturated by 10%, you get
#1411FE. If the color is desaturated by 10%, the color
#221FE2 is obtained.