The hex color #7fbb38 is a light color. The web-safe version is Hex
#66CC33. A complementary color is
#8044C7. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#B2EE6B, and Hex
#4C8805 is the 20% darker color. If the color is saturated by 10%, you get
#7FC131. If the color is desaturated by 10%, the color
#7FB53F is obtained.