How can I change my site to default to light mode for everyone/new people?

AI-generated summary

A user wants to set light mode as the default for their site, while still allowing users to switch to dark mode. 45thj5ej has checked their theme settings and confirmed that the light color scheme is set, but dark mode is still the default. Lilly suggested checking the theme settings to ensure the default theme is set to a light palette and that users can select a dark palette. 45thj5ej is unsure why dark mode is still the default, despite having the light theme set as the default. patrickemin shared a link to a discussion on the topic, suggesting that there may be a common misunderstanding of the mechanism.

Trying to make light mode the default for my site instead of dark mode, but have dark mode as an option for users. On my current theme, it is set to Light.

I checked the colors for it and it is indeed set to #FFFFFF (white) as the main background color. “Color scheme can be selected by users” is checked. My “default dark mode color scheme id” setting is set to the dark version of my theme. My browser has any dark-mode extension turned off.

In your admin - appearance - themes settings, make sure the settings for the default theme looks like this, and that in color schemes, the color palette is set to a light palette:

and that a dark palette can also be be selected by users:

Of course users will be able to override this with their user preferences interface settings or with the sidebar buttons.

Wait, I should have “theme can be selected” OFF? Yeah, as shown in OP, my color scheme is definitely light-color. For palettes, I have my light theme, the dark theme for that one specifically, and then a separate custom dark palette that I made selected as my 3 options. Not sure why dark keeps showing as default.

This is not easy to understand, I just had a (hot) discussion about that and we have different opinions about that dark mode… The subject has been discussed many times and it seems to me that whatever we think about that, there is a common misunderstanding of the mechanism.