Emojis and ASCII art requirement for contrast too?

WCAG 1.1 does seem to apply to emojis, emoticons, ASCII art, and leetspeak:
              (see https://www.w3.org/WAI/WCAG21/Techniques/html/H86 Providing text alternatives for emojis, emoticons, ASCII art, and leetspeak)

However, my question is, does WCAG apply the contrast requirements as well?
Should a person with low-vision or color-blind also be able to perceive emojis, ASCII art, etc.?
              (see https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum “emoji” is not listed)
              text: sequence of characters that can be programmatically determined<https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum#dfn-programmatically-determined>, where the sequence is expressing something in human language<https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum#dfn-human-language>
            human language: language that is spoken, written or signed (through visual or tactile means) to communicate with humans
            image of text: text that has been rendered in a non-text form (e.g., an image) in order to achieve a particular visual effect.
                        Note: This does not include text<https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum#dfn-text> that is part of a picture that contains significant other visual content.
e.g. A person's name on a nametag in a photograph.

For example, the following string should have an alternative, but should it also have minimum contrast, or does minimum only apply to human-readable text characters?
¯\_(ツ)_/¯

If it was the working group’s intent to also include emojis, emoticons, etc. should this be added to an erratum?

Some references to consider that seem to interpret that emojis, emoticons, and ASCII art should have minimum contrast:

Minnesota IT Services
Say It With a Face
Accessible Communications with Emojis and Emoticons

  1.  Color Contrast: If the emoticon or emoji is used in place of text, select ones that have good color contrast.
https://mn.gov/mnit/about-mnit/accessibility/news/?id=38-436147



Ability Net
Four ways to make emojis accessible
3.Remember to test emoji visibility in both dark and light modes
              https://abilitynet.org.uk/news-blogs/four-ways-make-emojis-accessible



Regards,
Phill Jenkins
Accessibility Executive, IBM Design
Equal Access toolkit and accessibility checker at ibm.com/able/<https://www.ibm.com/able/>
linkedin.com/in/philljenkins/<https://www.linkedin.com/in/philljenkins/>
“Without accessibility, there is no diversity and inclusion”