The hex color #173FD5 is a dark color. The web-safe version is Hex
#0033CC. A complementary color is
#E8C02A. The grayscale version is
#646464. A 20% lighter version of the original color is
#4A72FF, and Hex
#000CA2 is the 20% darker color. If the color is saturated by 10%, you get
#0F3BE0. If the color is desaturated by 10%, the color
#1F43CA is obtained.