The hex color #3bbfd5 is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#C4402A. The grayscale version is
#9A9A9A. A 20% lighter version of the original color is
#6EF2FF, and Hex
#088CA2 is the 20% darker color. If the color is saturated by 10%, you get
#31C3DB. If the color is desaturated by 10%, the color
#45BBCF is obtained.