The hex color #3428d0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#CBD72F. The grayscale version is
#646464. A 20% lighter version of the original color is
#675BFF, and Hex
#01009D is the 20% darker color. If the color is saturated by 10%, you get
#2F22DB. If the color is desaturated by 10%, the color
#392EC5 is obtained.