The hex color #3A2DA2 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#C5D25D. The grayscale version is
#585858. A 20% lighter version of the original color is
#6D60D5, and Hex
#07006F is the 20% darker color. If the color is saturated by 10%, you get
#3729A9. If the color is desaturated by 10%, the color
#3D319B is obtained.