# COLOUR_DEFAULT

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L731
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-define-tmux-h-colour_default/

```c
#define COLOUR_DEFAULT(c) ((c) == 8 || (c) == 9)
```

## Referenced by

- [`grid_clear`](/en/tmux/latest/reference/c-function-grid_clear/) (function)
- [`grid_empty_line`](/en/tmux/latest/reference/c-function-grid_empty_line/) (function)
- [`input_osc_10`](/en/tmux/latest/reference/c-function-input-c-input_osc_10/) (function)
- [`screen_select_cell`](/en/tmux/latest/reference/c-function-screen_select_cell/) (function)
- [`screen_write_clearendofline`](/en/tmux/latest/reference/c-function-screen_write_clearendofline/) (function)
- [`screen_write_clearline`](/en/tmux/latest/reference/c-function-screen_write_clearline/) (function)
- [`status_redraw`](/en/tmux/latest/reference/c-function-status_redraw/) (function)
- [`tty_attributes`](/en/tmux/latest/reference/c-function-tty_attributes/) (function)
- [`tty_clear_area`](/en/tmux/latest/reference/c-function-tty-c-tty_clear_area/) (function)
- [`tty_colours`](/en/tmux/latest/reference/c-function-tty-c-tty_colours/) (function)
- [`tty_colours_us`](/en/tmux/latest/reference/c-function-tty-c-tty_colours_us/) (function)
- [`tty_fake_bce`](/en/tmux/latest/reference/c-function-tty_fake_bce/) (function)
- [`window_pane_get_bg`](/en/tmux/latest/reference/c-function-window_pane_get_bg/) (function)