The hex color #3e29ce is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C1D631. The grayscale version is
#676767. A 20% lighter version of the original color is
#715CFF, and Hex
#0B009B is the 20% darker color. If the color is saturated by 10%, you get
#3A23D8. If the color is desaturated by 10%, the color
#422FC4 is obtained.