The hex color #61d40b is a light color. The web-safe version is Hex
#66CC00. A complementary color is
#9E2BF4. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#94FF3E, and Hex
#2EA100 is the 20% darker color. If the color is saturated by 10%, you get
#60DF01. If the color is desaturated by 10%, the color
#62C915 is obtained.