The hex color #2d367d is a dark color. The web-safe version is Hex
#333366. A complementary color is
#D2C982. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#6069B0, and Hex
#00034A is the 20% darker color. If the color is saturated by 10%, you get
#2A3482. If the color is desaturated by 10%, the color
#303878 is obtained.