The hex color #175e8c is a dark color. The web-safe version is Hex
#006699. A complementary color is
#E8A173. The grayscale version is
#565656. A 20% lighter version of the original color is
#4A91BF, and Hex
#002B59 is the 20% darker color. If the color is saturated by 10%, you get
#115F91. If the color is desaturated by 10%, the color
#1D5D87 is obtained.