The hex color #3A8C94 is a dark color. The web-safe version is Hex
#339999. A complementary color is
#C5736B. The grayscale version is
#737373. A 20% lighter version of the original color is
#6DBFC7, and Hex
#075961 is the 20% darker color. If the color is saturated by 10%, you get
#348E97. If the color is desaturated by 10%, the color
#408A91 is obtained.