The hex color #3ad8da is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#C52725. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#6DFFFF, and Hex
#07A5A7 is the 20% darker color. If the color is saturated by 10%, you get
#2FDDDF. If the color is desaturated by 10%, the color
#45D3D5 is obtained.