The hex color #1b4be8 is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#E4B417. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#4E7EFF, and Hex
#0018B5 is the 20% darker color. If the color is saturated by 10%, you get
#1347F4. If the color is desaturated by 10%, the color
#234FDC is obtained.