The hex color #3daaaa is a light color. The web-safe version is Hex
#339999. A complementary color is
#C25555. The grayscale version is
#868686. A 20% lighter version of the original color is
#70DDDD, and Hex
#0A7777 is the 20% darker color. If the color is saturated by 10%, you get
#36AEAE. If the color is desaturated by 10%, the color
#44A6A6 is obtained.