Withdrawn standards are listed in the References section on Understanding SC 1.4.3 and 1.4.6

[momdo]

https://www.w3.org/WAI/WCAG22/Understanding/contrast-minimum#references

The body text has not been updated in a long time, so some references are out of date....

• ISO-9241-3 is revised by ISO 9241-300 series
• ANSI/HFES 100-1988 is revised by ANSI/HFES 100-2007
  • See also https://www.hfes.org/publications/technical-standards
• IEC-4WD is revised by SRGB