The hex color #2d34d0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D2CB2F. The grayscale version is
#666666. A 20% lighter version of the original color is
#6067FF, and Hex
#00019D is the 20% darker color. If the color is saturated by 10%, you get
#272FDB. If the color is desaturated by 10%, the color
#3339C5 is obtained.