# Themes and sharing them

> Your own FlowLock colour theme: colours for the light and dark sides, how to share it as a link, QR code or file, and how to accept someone else's.

In “Appearance” you can make **your own theme**: five colours (accent, background, cards, text, secondary text), each
for the light and for the dark side, and a name of up to 40 characters. You can have several themes.

## Readability

FlowLock checks contrast with the same rule as for provider themes: text at least 4.5:1 against the background, accent
and secondary text at least 3:1. If a colour had to be adjusted, the editor says so, “The theme was adjusted for
readability”, and shows the resulting colours.

## Sharing

A theme has a link, a QR code and a `.flowlocktheme` file:

```
flowlock://theme/AR8fek1Mw4r09_UOFBH___8XIBsQIxrm7-lba2KTo5rQm9C10YE
https://flowlock.cc/theme#AR8fek1Mw4r09_UOFBH___8XIBsQIxrm7-lba2KTo5rQm9C10YE
```

Both links carry the same thing. The colours and the name are written in the link itself, and the FlowLock server
never sees them: in the web link they come after `#`, and the browser doesn't send that part. The web link is
clickable in messengers: the website page shows a preview and an “Open in FlowLock” button.

## Accepting a theme

Open the link or the file, or paste the link in “Appearance”. FlowLock shows a preview and asks for confirmation. A
theme from a newer FlowLock version won't open until you update the app.

## Which theme applies

Your own theme wins over the provider's (if you accepted it), and the provider's wins over the standard one. You choose
the mode: system, light or dark. Your list of themes and the chosen theme sync through your
[account](https://flowlock.cc/en/docs/account.md).