The hex color #40ab8f is a light color. The web-safe version is Hex
#339999. A complementary color is
#BF5470. The grayscale version is
#7E7E7E. A 20% lighter version of the original color is
#73DEC2, and Hex
#0D785C is the 20% darker color. If the color is saturated by 10%, you get
#3AB091. If the color is desaturated by 10%, the color
#46A78D is obtained.