The hex color #1a2374 is a dark color. The web-safe version is Hex
#333366. A complementary color is
#E5DC8B. The grayscale version is
#3B3B3B. A 20% lighter version of the original color is
#4D56A7, and Hex
#000041 is the 20% darker color. If the color is saturated by 10%, you get
#17217A. If the color is desaturated by 10%, the color
#1D256E is obtained.