The hex color #131e7c is a dark color. The web-safe version is Hex
#003366. A complementary color is
#ECE183. The grayscale version is
#3A3A3A. A 20% lighter version of the original color is
#4651AF, and Hex
#000049 is the 20% darker color. If the color is saturated by 10%, you get
#0F1B83. If the color is desaturated by 10%, the color
#172175 is obtained.