The hex color #3f32b5 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C0CD4A. The grayscale version is
#626262. A 20% lighter version of the original color is
#7265E8, and Hex
#0C0082 is the 20% darker color. If the color is saturated by 10%, you get
#3C2DBD. If the color is desaturated by 10%, the color
#4337AD is obtained.