The hex color #64efb0 is a light color. The web-safe version is Hex
#66FF99. A complementary color is
#9B104F. The grayscale version is
#ACACAC. A 20% lighter version of the original color is
#97FFE3, and Hex
#31BC7D is the 20% darker color. If the color is saturated by 10%, you get
#5DF6B0. If the color is desaturated by 10%, the color
#6BE8B0 is obtained.