The hex color #2a5f4c is a dark color. The web-safe version is Hex
#336633. A complementary color is
#D5A0B3. The grayscale version is
#474747. A 20% lighter version of the original color is
#5D927F, and Hex
#002C19 is the 20% darker color. If the color is saturated by 10%, you get
#27614D. If the color is desaturated by 10%, the color
#2D5D4C is obtained.