The hex color #3d33e1 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C2CC1E. The grayscale version is
#707070. A 20% lighter version of the original color is
#7066FF, and Hex
#0A00AE is the 20% darker color. If the color is saturated by 10%, you get
#382DEC. If the color is desaturated by 10%, the color
#4239D6 is obtained.