The hex color #445f4e is a dark color. The web-safe version is Hex
#336666. A complementary color is
#BBA0B1. The grayscale version is
#505050. A 20% lighter version of the original color is
#779281, and Hex
#112C1B is the 20% darker color. If the color is saturated by 10%, you get
#43604E. If the color is desaturated by 10%, the color
#455E4E is obtained.