The hex color #5ef19e is a light color. The web-safe version is Hex
#66FF99. A complementary color is
#A10E61. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#91FFD1, and Hex
#2BBE6B is the 20% darker color. If the color is saturated by 10%, you get
#57F99D. If the color is desaturated by 10%, the color
#65E99F is obtained.