The hex color #3eeec4 is a light color. The web-safe version is Hex
#33FFCC. A complementary color is
#C1113B. The grayscale version is
#A5A5A5. A 20% lighter version of the original color is
#71FFF7, and Hex
#0BBB91 is the 20% darker color. If the color is saturated by 10%, you get
#34F5C7. If the color is desaturated by 10%, the color
#48E7C1 is obtained.