The hex color #1b16b0 is a dark color. The web-safe version is Hex
#330099. A complementary color is
#E4E94F. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#4E49E3, and Hex
#00007D is the 20% darker color. If the color is saturated by 10%, you get
#1611BA. If the color is desaturated by 10%, the color
#201BA6 is obtained.