The hex color #5f599c is a dark color. The web-safe version is Hex
#666699. A complementary color is
#A0A663. The grayscale version is
#717171. A 20% lighter version of the original color is
#928CCF, and Hex
#2C2669 is the 20% darker color. If the color is saturated by 10%, you get
#5D57A0. If the color is desaturated by 10%, the color
#615B98 is obtained.