# TERM_256COLOURS

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L1634
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-define-tmux-h-term_256colours/

```c
#define TERM_256COLOURS 0x1
```

## Referenced by

- [`tty_check_bg`](/en/tmux/latest/reference/c-function-tty-c-tty_check_bg/) (function)
- [`tty_check_fg`](/en/tmux/latest/reference/c-function-tty-c-tty_check_fg/) (function)
- [`tty_colours_bg`](/en/tmux/latest/reference/c-function-tty-c-tty_colours_bg/) (function)
- [`tty_colours_fg`](/en/tmux/latest/reference/c-function-tty-c-tty_colours_fg/) (function)