The hex color #40a5f8 is a light color. The web-safe version is Hex
#3399FF. A complementary color is
#BF5A07. The grayscale version is
#9F9F9F. A 20% lighter version of the original color is
#73D8FF, and Hex
#0D72C5 is the 20% darker color. If the color is saturated by 10%, you get
#37A6FF. If the color is desaturated by 10%, the color
#4AA4EF is obtained.