The hex color #4df9ab is a light color. The web-safe version is Hex
#66FF99. A complementary color is
#B20654. The grayscale version is
#A6A6A6. A 20% lighter version of the original color is
#80FFDE, and Hex
#1AC678 is the 20% darker color. If the color is saturated by 10%, you get
#44FFAC. If the color is desaturated by 10%, the color
#56F1AA is obtained.