The hex color #34457c is a dark color. The web-safe version is Hex
#333366. A complementary color is
#CBBA83. The grayscale version is
#525252. A 20% lighter version of the original color is
#6778AF, and Hex
#011249 is the 20% darker color. If the color is saturated by 10%, you get
#314480. If the color is desaturated by 10%, the color
#374678 is obtained.