To meet WCAG 2.2: perceivable (on w3.org) you need to make sure users can recognise and use your service with the senses that are available to them.
Er mwyn cwrdd ag egwyddor ‘clir’ WCAG 2.2 rhaid ichi sicrhau y gall defnyddwyr adnabod a defnyddio eich gwasanaeth gyda'r synhwyrau sydd ar gael iddynt.