The hex color #3b139c is a dark color. The web-safe version is Hex
#330099. A complementary color is
#C4EC63. The grayscale version is
#4E4E4E. A 20% lighter version of the original color is
#6E46CF, and Hex
#080069 is the 20% darker color. If the color is saturated by 10%, you get
#390DA4. If the color is desaturated by 10%, the color
#3D1994 is obtained.