The hex color #436fda is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#BC9025. The grayscale version is
#848484. A 20% lighter version of the original color is
#76A2FF, and Hex
#103CA7 is the 20% darker color. If the color is saturated by 10%, you get
#3D6DE3. If the color is desaturated by 10%, the color
#4A71D1 is obtained.