The hex color #3b9adf is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#C46520. The grayscale version is
#919191. A 20% lighter version of the original color is
#6ECDFF, and Hex
#0867AC is the 20% darker color. If the color is saturated by 10%, you get
#329BE7. If the color is desaturated by 10%, the color
#4499D7 is obtained.