# Uptime and Status colors

Source: https://instatus.com/help/status-page/uptime-colors

## How is uptime calculated?
A component's uptime is calculated over a period of time and the default period is 90 days, if there was no outage in said period the uptime would be 100%. 

To calculate the component's uptime we calculate the duration of outages from the start time to the time they were resolved.

A partial outage weight in this calculation is 30% the weight of a major outage, since a major outage will affect all users unlike a partial one and degraded performance does not affect the uptime of a component.

**Here's an example for a 90 day period:**

```markup
Total outages duration = Major outages duration in minutes + 
(0.3 * Partial outages duration in minutes)

Total minutes = 90 * 24 * 60

Uptime = ((Total minutes - Total outages duration) / Total minutes) * 100
```

## How are status colors determined?

The default status colors are green, yellow, orange and red, although you can [customize your status colors to match your brand](https://instatus.com/help/status-page/customize).

As downtime increases the status colors go from green to yellow to orange and lastly red, and each color becomes fuller as the minutes of downtime increase.

- From 1 to 20 minutes, the color gets more yellow.
- From 20 to 40 minutes, the color gets more orange.
- From 40+ minutes, the color gets more red.

![Instatus status page colors](https://instatus.com/help/upc1.png)

![Instatus status page simple design](https://instatus.com/help/upc2.png)

![Instatus status page bars length design](https://instatus.com/help/upc3.png)

- [Add metrics and charts to your status page](https://instatus.com/help/status-page/metrics): Learn how to add metrics and charts to your status page.