The hex color #3ad8a8 is a light color. The web-safe version is Hex
#33CC99. A complementary color is
#C52757. The grayscale version is
#939393. A 20% lighter version of the original color is
#6DFFDB, and Hex
#07A575 is the 20% darker color. If the color is saturated by 10%, you get
#31DFAA. If the color is desaturated by 10%, the color
#43D1A6 is obtained.