The hex color #3c47b7 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C3B848. The grayscale version is
#696969. A 20% lighter version of the original color is
#6F7AEA, and Hex
#091484 is the 20% darker color. If the color is saturated by 10%, you get
#3844BF. If the color is desaturated by 10%, the color
#404AAF is obtained.