The hex color #545c4c is a dark color. The web-safe version is Hex
#666633. A complementary color is
#ABA3B3. The grayscale version is
#545454. A 20% lighter version of the original color is
#878F7F, and Hex
#212919 is the 20% darker color. If the color is saturated by 10%, you get
#545D4B. If the color is desaturated by 10%, the color
#545B4D is obtained.