The hex color #335ecc is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#CCA133. The grayscale version is
#747474. A 20% lighter version of the original color is
#6691FF, and Hex
#002B99 is the 20% darker color. If the color is saturated by 10%, you get
#2C5CD5. If the color is desaturated by 10%, the color
#3A60C3 is obtained.