(1) A hexadecimal representation.
(2) An RGB (Red/Green/Blue) code. Each code has a value from 0 to 255.
These codes can be used in computer art, Excel spreadsheet, even add color to calculators (mainly HP Prime).
Casio fx-CG 50 and HP Prime: The Price is Right Wheel Simulation Introduction On the very famous game show, The Price Is Right, c...