Associations

By Susam Pal on 09 Dec 2024

This page records some of the associations between various numbers, letters of the alphabet, and colours that occur in my mind.  I must mention here that I do not have synaesthesia.  Nevertheless, many of these associations are deeply ingrained in my mind due to childhood experiences I've had while learning computers and various mnemonic systems.

Number Colour Sound
0 Black /s/, /z/
1 Blue /t/, /d/, /θ/, /ð/
2 Green /n/
3 Cyan /m/
4 Red /r/
5 Magenta /l/
6 Brown /tʃ/, /dʒ/, /ʃ/, /ʒ/
7 White /k/, /g/
8 Gray /f/, /v/
9 Light Blue /p/, /b/
10 Light Green -
11 Light Cyan -
12 Light Red -
13 Light Magenta -
14 Yellow -
15 Bright White -

The sections below describe the source of some of these associations.

IBM EGA

The number-colour associations come from my early exposure to GWBASIC running on IBM EGA machines.  On these systems, and their predecessors, each supported colour was represented by an integer code: 0 for black, 1 for blue, 2 for green, and so on.

A screenshot of a GWBASIC program demonstrating the 16 colours in SCREEN 0
A GWBASIC program that shows the 16 colours supported in SCREEN 0

Programs that wrote text directly to video memory at address B800:0000 also used these integer codes to display text in different colors.

A screenshot of a DEBUG.EXE session demonstrating the 16 colours supported by IBM EGA machines
A DEBUG.EXE session that shows the 16 colours supported by IBM EGA machines in MODE 3

I still remember quite vividly how exciting it was to use the colour commands to paint the background blue and write text on it in various colours.