Advice about healthy sun exposure to ensure adequate Vitamin D production generally notes that more exposure is required if you have Melanin in your skin (i.e darker skin).
"If you have dark skin – for example you have an African, African-Caribbean or south Asian background – you may also not get enough vitamin D from sunlight."
https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-...
"If you have dark skin – for example you have an African, African-Caribbean or south Asian background – you may also not get enough vitamin D from sunlight."