The hex color #3f08d2 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#C0F72D. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#723BFF, and Hex
#0C009F is the 20% darker color. If the color is saturated by 10%, you get
#3C00DE. If the color is desaturated by 10%, the color
#4211C6 is obtained.