The hex color #34458c is a dark color. The web-safe version is Hex
#333399. A complementary color is
#CBBA73. The grayscale version is
#575757. A 20% lighter version of the original color is
#6778BF, and Hex
#011259 is the 20% darker color. If the color is saturated by 10%, you get
#314391. If the color is desaturated by 10%, the color
#384787 is obtained.