The hex color #3ff77c is a light color. The web-safe version is Hex
#33FF66. A complementary color is
#C00883. The grayscale version is
#919191. A 20% lighter version of the original color is
#72FFAF, and Hex
#0CC449 is the 20% darker color. If the color is saturated by 10%, you get
#37FF7A. If the color is desaturated by 10%, the color
#47ED7E is obtained.