The hex color #4ea19f is a light color. The web-safe version is Hex
#669999. A complementary color is
#B15E60. The grayscale version is
#858585. A 20% lighter version of the original color is
#81D4D2, and Hex
#1B6E6C is the 20% darker color. If the color is saturated by 10%, you get
#49A4A2. If the color is desaturated by 10%, the color
#539E9C is obtained.