The hex color #81ff7c is a light color. The web-safe version is Hex
#99FF66. A complementary color is
#7E0083. The grayscale version is
#A9A9A9. A 20% lighter version of the original color is
#B4FFAF, and Hex
#4ECC49 is the 20% darker color. If the color is saturated by 10%, you get
#7DFF77. If the color is desaturated by 10%, the color
#85F681 is obtained.