The hex color #03154c is a dark color. The web-safe version is Hex
#000033. A complementary color is
#FCEAB3. The grayscale version is
#212121. A 20% lighter version of the original color is
#36487F, and Hex
#000019 is the 20% darker color. If the color is saturated by 10%, you get
#001450. If the color is desaturated by 10%, the color
#061648 is obtained.