The hex color #40e70f is a light color. The web-safe version is Hex
#33FF00. A complementary color is
#BF18F0. The grayscale version is
#676767. A 20% lighter version of the original color is
#73FF42, and Hex
#0DB400 is the 20% darker color. If the color is saturated by 10%, you get
#3CF406. If the color is desaturated by 10%, the color
#44DA18 is obtained.