The hex color #3da4b6 is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#C25B49. The grayscale version is
#888888. A 20% lighter version of the original color is
#70D7E9, and Hex
#0A7183 is the 20% darker color. If the color is saturated by 10%, you get
#36A7BB. If the color is desaturated by 10%, the color
#44A1B1 is obtained.