The hex color #5b6a9c is a dark color. The web-safe version is Hex
#666699. A complementary color is
#A49563. The grayscale version is
#767676. A 20% lighter version of the original color is
#8E9DCF, and Hex
#283769 is the 20% darker color. If the color is saturated by 10%, you get
#5869A0. If the color is desaturated by 10%, the color
#5E6B98 is obtained.