The hex color #3d97e4 is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#C2681B. The grayscale version is
#939393. A 20% lighter version of the original color is
#70CAFF, and Hex
#0A64B1 is the 20% darker color. If the color is saturated by 10%, you get
#3497EC. If the color is desaturated by 10%, the color
#4697DC is obtained.