The hex color #5c6b7c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#A39483. The grayscale version is
#6C6C6C. A 20% lighter version of the original color is
#8F9EAF, and Hex
#293849 is the 20% darker color. If the color is saturated by 10%, you get
#5A6B7E. If the color is desaturated by 10%, the color
#5E6B7A is obtained.