The hex color #5b577c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#A4A883. The grayscale version is
#656565. A 20% lighter version of the original color is
#8E8AAF, and Hex
#282449 is the 20% darker color. If the color is saturated by 10%, you get
#5A567E. If the color is desaturated by 10%, the color
#5C587A is obtained.