The hex color #1c16f9 is a dark color. The web-safe version is Hex
#3300FF. A complementary color is
#E3E906. The grayscale version is
#646464. A 20% lighter version of the original color is
#4F49FF, and Hex
#0000C6 is the 20% darker color. If the color is saturated by 10%, you get
#150EFF. If the color is desaturated by 10%, the color
#231EEA is obtained.