The hex color #819afc is a light color. The web-safe version is Hex
#9999FF. A complementary color is
#7E6503. The grayscale version is
#B2B2B2. A 20% lighter version of the original color is
#B4CDFF, and Hex
#4E67C9 is the 20% darker color. If the color is saturated by 10%, you get
#7C98FF. If the color is desaturated by 10%, the color
#869CF5 is obtained.