The hex color #1b13a9 is a dark color. The web-safe version is Hex
#330099. A complementary color is
#E4EC56. The grayscale version is
#484848. A 20% lighter version of the original color is
#4E46DC, and Hex
#000076 is the 20% darker color. If the color is saturated by 10%, you get
#170EB3. If the color is desaturated by 10%, the color
#1F189F is obtained.