Your storefront's primary color will be used on your storefront's common pages, such as the content, account, and checkout pages.
To change the brand colors:
Navigate to Website.
Select Edit Website.
Go to Branding.
In the Color field, locate the Brand Color area.
Change it to your brand colors.
Click Save & Apply
Be sure to choose a color with good contrast to ensure readability and accessibility. Colors that contrast well with each other make text and elements stand out, improving the overall user experience. For example, dark text on a light background or light text on a dark background can be more easily read by users, including those with visual impairments.