The hex color #3ee69f is a light color. The web-safe version is Hex
#33FF99. A complementary color is
#C11960. The grayscale version is
#969696. A 20% lighter version of the original color is
#71FFD2, and Hex
#0BB36C is the 20% darker color. If the color is saturated by 10%, you get
#35EEA0. If the color is desaturated by 10%, the color
#47DE9E is obtained.