The hex color #2783ce is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#D87C31. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#5AB6FF, and Hex
#00509B is the 20% darker color. If the color is saturated by 10%, you get
#1E84D6. If the color is desaturated by 10%, the color
#3082C6 is obtained.