The hex color #3b3fd9 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C4C026. The grayscale version is
#717171. A 20% lighter version of the original color is
#6E72FF, and Hex
#080CA6 is the 20% darker color. If the color is saturated by 10%, you get
#363AE3. If the color is desaturated by 10%, the color
#4044CF is obtained.