## Color Depth

- RGB color is a 24-bit system (16 million colors)
- 8 bits (256 colors) for each channel (red, green, blue).

  28x28x28 = 2(8 + 8 + 8) = 224x = 16,777,216

Bits | Colors
--- | ---
1 | 21 = 2
2 | 22 = 4
3 | 23 = 8
4 | 24 = 16
5 | 25 = 32
6 | 26 = 64
7 | 27 = 128
8 | 28 = 256
16 | 216 = 65,536
24 | 224 = 17 x 106 (millions)
32 | 232 = 4.3 x 109

### RGB

- Three channels specified with decimal values (each channel 0 to 255):
  rgb(50, 150, 0)
- Three channels specified with hexadecimal values (each channel 00 to ff):
  #a51c30
- Three channels specified with percentage values (each channel 0% to 100%):
  rgb(50%, 10%, 75%)