The hex color #1a56a4 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#E5A95B. The grayscale version is
#5C5C5C. A 20% lighter version of the original color is
#4D89D7, and Hex
#002371 is the 20% darker color. If the color is saturated by 10%, you get
#1355AB. If the color is desaturated by 10%, the color
#21579D is obtained.