The hex color #3d28f2 is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#C2D70D. The grayscale version is
#727272. A 20% lighter version of the original color is
#705BFF, and Hex
#0A00BF is the 20% darker color. If the color is saturated by 10%, you get
#3821FF. If the color is desaturated by 10%, the color
#422FE5 is obtained.