The numbers on the right are the "hexadecimal HTML color codes".
FF0000 is bright red, 00FF00 is bright green, 0000FF is bright blue, FFFFFF is white and 000000 is black.
More details at
Web colors
and
Web colors
and
Farben definieren in HTML
Some colours that I use:
| black | black | 000000 |
| dark grey | dark grey | 444444 |
| grey | grey | 666666 |
| navy | navy | 000099 |
| dark blue | dark blue | 003399 |
| mirror blue | mirror blue | 34537C |
| blue | blue | 0099FF |
| dark purple | dark purple | 9900CC |
| purple | purple | CC00CC |
| mauve | mauve | FF00FF |
| dark green | dark green | 006600 |
| green | green | 339933 |
| very dark red | very dark red | 500000 |
| dark red | dark red | 990000 |
| mirror red | mirror red | C11919 |
| red | red | FF0000 |
| pink | pink | FF99FF |
| very dark yellow | very dark yellow | 993300 |
| dark yellow | dark yellow | FF9933 |
| light grey | light grey | D0D0D0 |
| light blue | light blue | C0C0F0 |
| pale blue | pale blue | CCFFFF |
| light green | light green | C0F0C0 |
| pale green | pale green | EEFFEE |
| light red | light red | F0C0C0 |
| pale yellow | pale yellow | FFFFCC |
| white | white | FFFFFF |