The hex color #564c47 is a dark color. The web-safe version is Hex
#663333. A complementary color is
#A9B3B8. The grayscale version is
#4E4E4E. A 20% lighter version of the original color is
#897F7A, and Hex
#231914 is the 20% darker color. If the color is saturated by 10%, you get
#574C46. If the color is desaturated by 10%, the color
#554C48 is obtained.