aqua | aqua | A color constant. |
black | black | A color constant. |
blue | blue | A color constant. |
blue-of-rgb-color | (blue-of-rgb-color color) | Return the blue constituent of the color. |
blue1 | blue1 | A color constant. |
blue2 | blue2 | A color constant. |
blue3 | blue3 | A color constant. |
brown | brown | A color constant. |
dark-red | dark-red | A color constant. |
dark-yellow | dark-yellow | A color constant. |
fuchsia | fuchsia | A color constant. |
green | green | A color constant. |
green-of-rgb-color | (green-of-rgb-color color) | Return the green constituent of the color. |
green1 | green1 | A color constant. |
green2 | green2 | A color constant. |
grey | grey | A color constant. |
grey1 | grey1 | A color constant. |
grey2 | grey2 | A color constant. |
light-blue | light-blue | A color constant. |
lime | lime | A color constant. |
make-color | (make-color r g b) | Make and return the rgb-list representation of the color with r red, g green, and b blue. |
make-rgb-color | (make-rgb-color r g b) | Make and return a color represented by a red, green and blue constituent. |
maroon | maroon | A color constant. |
navy | navy | A color constant. |
olive | olive | A color constant. |
orange | orange | A color constant. |
purple | purple | A color constant. |
red | red | A color constant. |
red-of-rgb-color | (red-of-rgb-color color) | Return the red constituent of the LAML color. |
rgb-color | (rgb-color r g b) | Return an 'Internet color string" encoding the colors r, g, and b. |
rgb-color-encoding | (rgb-color-encoding . color-pars) | Return a color encoding (a string of length seven such as "#123456") of color-pars. |
rgb-color-list | (rgb-color-list color-triple-list) | Returns the color encoding of (list r g b) given a list of three color numbers as parameter. |
rgb-color? | (rgb-color? x) | Is x a LAML color |
silver | silver | A color constant. |
tetal | tetal | A color constant. |
white | white | A color constant. |
yellow | yellow | A color constant. |
![]() ![]() ![]() 1 Primary color encoding function. | |||
The function in this section, rgb-color-encoding, accepts a variety of different color formats as input. It returns a string of length seven, such as "#ff00ff". The output format is the primary color representation in most web contexts. | |||
rgb-color-encoding | |||
Form | (rgb-color-encoding . color-pars) | ||
Description | Return a color encoding (a string of length seven such as "#123456") of color-pars. The color-pars parameter(s) to this function are very versatile. If it is a color encoding string already, just return it. If you care about efficiency, use can consider to use the function rgb-color instead of rgb-color-encoding. | ||
Returns | A string of length 7 of the format "#rrggbb". | ||
See also | more efficient functions | rgb-color rgb-color-list | |
![]() ![]() ![]() 2 Secondary color encoding functions. | |||
The functions in this section only work with the old version of the color representation. This is the untagged list representation, such as '(255 0 0). For new development, the function make-rgb-color should be used together with the color encoding function rgb-color-encoding. | |||
rgb-color | |||
Form | (rgb-color r g b) | ||
Description | Return an 'Internet color string" encoding the colors r, g, and b. | ||
Parameters | r | The amount of red - a decimal number between 0 and 255. | |
g | The amount of green - a decimal number between 0 and 255. | ||
b | The amount of blue - a decimal number between 0 and 255. | ||
Returns | A string of length 7 of the form "#rrggbb". | ||
rgb-color-list | |||
Form | (rgb-color-list color-triple-list) | ||
Description | Returns the color encoding of (list r g b) given a list of three color numbers as parameter. | ||
Parameters | color-triple-list | A list of length 3. Each element of the list is a decimal integer between 0 and 255. | |
Returns | A string of length 7 of the form "#rrggbb". | ||
![]() ![]() ![]() 3 Color constructor, predicate, and selectors. | |||
The function make-rgb-color is the primary color constructor in LAML-based software. The predidate and the selectors only work with make-rgb-color. The function make-color is an old version of the constructor. | |||
make-rgb-color | |||
Form | (make-rgb-color r g b) | ||
Description | Make and return a color represented by a red, green and blue constituent. This is the primary color constructor of LAML-based software. | ||
Parameters | r | The amount of red - a decimal number between 0 and 255. | |
g | The amount of green - a decimal number between 0 and 255. | ||
b | The amount of blue - a decimal number between 0 and 255. | ||
Returns | A tagged list of color numbers. | ||
See also | conversion function | rgb-color-encoding | |
rgb-color? | |||
Form | (rgb-color? x) | ||
Description | Is x a LAML color | ||
red-of-rgb-color | |||
Form | (red-of-rgb-color color) | ||
Description | Return the red constituent of the LAML color. | ||
Parameters | color | A color constructed with make-rgb-color. | |
See also | color constructor | make-rgb-color | |
green-of-rgb-color | |||
Form | (green-of-rgb-color color) | ||
Description | Return the green constituent of the color. | ||
Parameters | color | A color constructed with make-rgb-color. | |
See also | color constructor | make-rgb-color | |
blue-of-rgb-color | |||
Form | (blue-of-rgb-color color) | ||
Description | Return the blue constituent of the color. | ||
Parameters | color | A color constructed with make-rgb-color. | |
See also | color constructor | make-rgb-color | |
make-color | |||
Form | (make-color r g b) | ||
Description | Make and return the rgb-list representation of the color with r red, g green, and b blue. This is an old version of the color contructor. | ||
Note | Deprecated. Use make-rgb-color. | ||
![]() ![]() ![]() 4 Color constants. | |||
To stay backward compatible with a substantial amount of older LAML software, all color constants are bound to the old LAML color representation. Thus, for instance, the value of red is (255 0 0), and not (rgb-color 255 0 0). As an important observation, the primary color encoding function, rgb-color-encoding, accepts the value of the color constants as input (besides a number of other kinds of input). | |||
red | |||
Form | red | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
dark-red | |||
Form | dark-red | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
green | |||
Form | green | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
green1 | |||
Form | green1 | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
green2 | |||
Form | green2 | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
blue | |||
Form | blue | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
white | |||
Form | white | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
black | |||
Form | black | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
yellow | |||
Form | yellow | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
purple | |||
Form | purple | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
light-blue | |||
Form | light-blue | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
blue1 | |||
Form | blue1 | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
blue2 | |||
Form | blue2 | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
blue3 | |||
Form | blue3 | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
orange | |||
Form | orange | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
dark-yellow | |||
Form | dark-yellow | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
grey1 | |||
Form | grey1 | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
grey2 | |||
Form | grey2 | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
brown | |||
Form | brown | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
maroon | |||
Form | maroon | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
grey | |||
Form | grey | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
silver | |||
Form | silver | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
tetal | |||
Form | tetal | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
aqua | |||
Form | aqua | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
lime | |||
Form | lime | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
olive | |||
Form | olive | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
navy | |||
Form | navy | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||
fuchsia | |||
Form | fuchsia | ||
Description | A color constant. A color is represented as a list of integers of length three (rgb). | ||