The hex color #3bc4dd is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#C43B22. The grayscale version is
#9F9F9F. A 20% lighter version of the original color is
#6EF7FF, and Hex
#0891AA is the 20% darker color. If the color is saturated by 10%, you get
#31C8E3. If the color is desaturated by 10%, the color
#45C0D7 is obtained.