Theme radius setting manages the radius factor applied to the components: 
<ThemeProvider
  radius="medium"
>
  <TimeSeries
    variant="bar"
    query={{
      accessToken: "<PROPEL_ACCESS_TOKEN>",
      metric: {
        count: {
          dataPool: { name: "TacoSoft Demo Data" }
        },
      },
      timeRange: { relative: RelativeTimeRange.LastNDays, n: 90 },
      granularity: "DAY",
    }}
  />
</ThemeProvider>
none
small
medium
large
full
The resulting border-radius is contextual and differs depending on the component.

​
Radius overrides

Certain components allow you to override the radius factor using their own radius prop. 
<Flex align="center" gap="3">
	<Button radius="none">Save</Button>
	<Button radius="small">Save</Button>
	<Button radius="medium">Save</Button>
	<Button radius="large">Save</Button>
	<Button radius="full">Save</Button>
</Flex>
The card component won’t have the radius prop, but will inherit the radius setting from the theme. The radius prop is also unavailable on most text-based components.

​
Radius scale

Radius values used in the components are derived from a 6-step scale.

1

2

3

4

5

6

While you can’t use a specific step on a particular component directly—the radius prop is used to set just the radius factor—you can use the radius scale to style your own components. Radius tokens are accessed using CSS variables. You can use these tokens to style your custom components, ensuring they are consistent with the rest of your theme. 
/* Radius values that automatically respond to the radius factor */
var(--radius-1);
var(--radius-2);
var(--radius-3);
var(--radius-4);
var(--radius-5);
var(--radius-6);

/* A multiplier that controls the theme radius */
var(--radius-factor);

/*
 * A variable used to calculate a fully rounded radius.
 * Usually used within a CSS `max()` function.
 */
var(--radius-full);

/*
 * A variable used to calculate radius of a thumb element.
 * Usually used within a CSS `max()` function.
 */
var(--radius-thumb);