The hex color #374ee0 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#C8B11F. The grayscale version is
#777777. A 20% lighter version of the original color is
#6A81FF, and Hex
#041BAD is the 20% darker color. If the color is saturated by 10%, you get
#314AEB. If the color is desaturated by 10%, the color
#3D52D6 is obtained.