The hex color #57566a is a dark color. The web-safe version is Hex
#666666. A complementary color is
#A8A995. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#8A899D, and Hex
#242337 is the 20% darker color. If the color is saturated by 10%, you get
#56556B. If the color is desaturated by 10%, the color
#585769 is obtained.