// https://ee-programming-notepad.blogspot.com/2016/09/16-bits-rgb-color-representation.html
uint16_t color;

// white
color = 0b1111111111111111; // binary representation
color = 0xFFFF;             // hexadecimal representation
color = 65535;              // decimal representation

// black
color = 0b0000000000000000; // binary representation
color = 0x0000;             // hexadecimal representation
color = 0;                  // decimal representation

// yellow
color = 0b1111111111100000; // binary representation
color = 0xFFE0;             // hexadecimal representation
color = 65504;              // decimal representation

// blue
color = 0b0000000000011111; // binary representation
color = 0x001F;             // hexadecimal representation
color = 31;                 // decimal representation

// red
color = 0b1111100000000000; // binary representation
color = 0xF800;             // hexadecimal representation
color = 63488;              // decimal representation

// green
color = 0b0000011111100000; // binary representation
color = 0x07E0;             // hexadecimal representation
color = 2016;               // decimal representation

// cyan
color = 0b0000011111111111; // binary representation
color = 0x07FF;             // hexadecimal representation
color = 2047;               // decimal representation

// magenta
color = 0b1111100000011111; // binary representation
color = 0xF81F;             // hexadecimal representation
color = 63519;              // decimal representation