The hex color #03ee9f is a light color. The web-safe version is Hex
#00FF99. A complementary color is
#FC1160. The grayscale version is
#858585. A 20% lighter version of the original color is
#36FFD2, and Hex
#00BB6C is the 20% darker color. If the color is saturated by 10%, you get
#00F8A2. If the color is desaturated by 10%, the color
#10E49C is obtained.