The hex color #3D4262 is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C2BD9D. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#707595, and Hex
#0A0F2F is the 20% darker color. If the color is saturated by 10%, you get
#3C4164. If the color is desaturated by 10%, the color
#3E4360 is obtained.