The hex color #3dbbbe is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#C24441. The grayscale version is
#929292. A 20% lighter version of the original color is
#70EEF1, and Hex
#0A888B is the 20% darker color. If the color is saturated by 10%, you get
#35BFC2. If the color is desaturated by 10%, the color
#46B7BA is obtained.