Complementary Color - Calculator

Example calculates the complementary of orange: light greenish blue. Random color selects a random color and determines its complementary color. This function is good for getting a feel for complementary colors if you play around with it a bit.

In the RGB color space used by computers, a color is formed from the three components red, green and blue. Each of these three values ​​is given a value between 0 (no expression) and 255 (full expression). These values ​​are usually given in the hexadecimal system, in which 255 corresponds to the value FF, and the color value begins with # to indicate this. The three hexadecimal values ​​are written one after the other without gaps, first red, then green, then blue.
The complementary color is then calculated very simply. For the new red value, FF (255) is calculated minus the old red value and the same is done for green and blue.
Another term for a color and its complementary color in the sense used here is compensating color pair.
Incidentally, it does not matter whether the letters A, B, C, D, E and F, which can appear in the color codes, are written in upper or lower case. In the results here they are written in lower case. Any program into which color codes can be entered should accept both variants.

In this color model, there is no color that is its own complementary color. However, the gray shades 808080 and 7F7F7F are very close to each other, and are visually almost indistinguishable. The furthest apart are, of course, black and white, 000000 and FFFFFF. The most diverse impressions of color and complementary color are created by pairs that are as far away from gray as possible, i.e., whose three color values ​​are as different as possible.