FLTK colors

FLTK cheatsheets

FLTK icons • FLTK colors

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Colormap cheatsheet

Source: https://www.fltk.org/doc-1.3/drawing.html

Color hex numbers

The RGB part and the index part must not be non-zero at the same time. See: https://www.fltk.org/doc-1.3/Enumerations_8H.html

 Fl_Color => 0xrrggbbii
                | | | |
                | | | +--- index between 0 and 255
                | | +----- blue color component (8 bit)
                | +------- green component (8 bit)
                +--------- red component (8 bit)

Color macros

FL_FOREGROUND_COLOR	0
FL_BACKGROUND2_COLOR	7
FL_INACTIVE_COLOR	8
FL_SELECTION_COLOR	15
Free colors (User-defined palette items)	16
	⋮
	31
FL_GRAY0	32
FL_DARK3	39
FL_DARK2	45
FL_DARK1	47
FL_BACKGROUND_COLOR	49
FL_LIGHT1	50
FL_LIGHT2	52
FL_LIGHT3	54
FL_BLACK	56
FL_RED	88
FL_GREEN	63
FL_YELLOW	95
FL_BLUE	216
FL_MAGENTA	248
FL_CYAN	223
FL_DARK_RED	72
FL_DARK_GREEN	60
FL_DARK_YELLOW	76
FL_DARK_BLUE	136
FL_DARK_MAGENTA	152
FL_DARK_CYAN	140
FL_WHITE	255