The hex color #3ad9da is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#C52625. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#6DFFFF, and Hex
#07A6A7 is the 20% darker color. If the color is saturated by 10%, you get
#2FDEDF. If the color is desaturated by 10%, the color
#45D4D5 is obtained.