The hex color #597c5c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#A683A3. The grayscale version is
#666666. A 20% lighter version of the original color is
#8CAF8F, and Hex
#264929 is the 20% darker color. If the color is saturated by 10%, you get
#587E5B. If the color is desaturated by 10%, the color
#5A7A5D is obtained.