The hex color #40a1e4 is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#BF5E1B. The grayscale version is
#979797. A 20% lighter version of the original color is
#73D4FF, and Hex
#0D6EB1 is the 20% darker color. If the color is saturated by 10%, you get
#37A2EC. If the color is desaturated by 10%, the color
#49A0DC is obtained.