Control Object Properties

Color Properties

Define Color Attributes

Some properties are used to define color attributes in various graphical control objects. Some examples are BackColor$, BackHilight1$, BorderColor$, CurrentCellColor$, just to name a few.

To apply a color to these properties, you can specify a color name and number, an RGB value, an HTML Hex code, an HSL value or a color specification in HTML format.

Specifying two colors separated by a + (plus sign) will blend the colors together. Adding *nnn at the end of any color specification will lighten/darken the color.

The Properties List provides a complete alphabetically arranged list of all the various properties available, including color properties.

Note:
Throughout the system, property names with the word/syllable "color" can also be spelled using the alternate English spelling of "colour".

Color Names and Numbers

The following table defines the named colors in the system and their respective color numbers:

Black

0

Light Blue

4

Dark Gray

8

Dark Blue

12

Light Red

1

Light Magenta

5

Dark Red

9

Dark Magenta

13

Light Green

2

Light Cyan

6

Dark Green

10

Dark Cyan

14

Light Yellow

3

White

7

Dark Yellow

11

Light Gray

15

If the "Light" or "Dark" clause is omitted from a color name specification, the system will assume "Light" for text/foreground colors and "Dark" for background colors.

Note:
The color keyword "LIGHT" or "GRAY" may be entered as "LITE" or "GREY" respectively.

RGB Color Specifications

Wherever a color name/string can be specified, an RGB value can be supplied:

"RGB: rrr, ggg, bbb"

Where:

rrr

Red intensity in the range of 0 to 255

ggg

Green intensity in the range of 0 to 255

bbb

Blue intensity in the range of 0 to 255

Example:

White would be "RGB: 255 255 255", and Orange would be "RGB: 250 165 0".

HTML Hex Color Codes

Each HTML color code consists of the # symbol followed by six letters or numbers in the hexadecimal number system, which represent the Red, Green and Blue components of the color (i.e. #RRGGBB). The first two values represent the intensity of the Red color, the next two values represent the intensity of the Green color, and the last two values represent the intensity of the Blue color. The value 00 is the least intense and FF is the most intense. FF in the hexadecimal system represents the number 255 in decimal form.

Example:

This example lists the hexadecimal codes and equivalent decimal codes that produce the colors Red, Green, Blue and Cyan.

Color Name

Hexadecimal Code (#RRGGBB)

Decimal Code (R,G,B)

Result

Red

#FF0000

(255,0,0)  Maximum of Red, no Green, no Blue

Green

#00FF00

(0,255,0)  No Red, maximum of Green, no Blue

Blue

#0000FF

(0,0,255)  No Red, no Green, maximum of Blue

Cyan

#00FFFF

(0,255,255)  No Red, maximum of Green and Blue

HTML Named Colors

You can also use any of the 140 standard HTML named colors by prefixing the HTML color name with a # symbol.

(Support for the use of HTML named colors was added in PxPlus 2022.)

Example:

To use the HTML named color Maroon, in your code, you would set the color to:

#Maroon (case insensitive)

Any invalid name will be considered Default. For information on which colors are supported, visit https://www.w3schools.com/tags/ref_colornames.asp.

The following table lists all the HTML named colors:

Color Name

Result

Color Name

Result

#AliceBlue

 

#AntiqueWhite

 

#Aqua

 

#Aquamarine

 

#Azure

 

#Beige

 

#Bisque

 

#Black

 

#BlanchedAlmond

 

#Blue

 

#BlueViolet

 

#Brown

 

#Burlywood

 

#CadetBlue

 

#Chartreuse

 

#Chocolate

 

#Coral

 

#CornflowerBlue

 

#Cornsilk

 

#Crimson

 

#Cyan

 

#DarkBlue

 

#DarkCyan

 

#DarkGoldenrod

 

#DarkGray

 

#DarkGreen

 

#DarkKhaki

 

#DarkMagenta

 

#DarkOliveGreen

 

#DarkOrange

 

#DarkOrchid

 

#DarkRed

 

#DarkSalmon

 

#DarkSeaGreen

 

#DarkSlateBlue

 

#DarkSlateGray

 

#DarkTurquoise

 

#DarkViolet

 

#DeepPink

 

#DeepSkyBlue

 

#DimGray

 

#DodgerBlue

 

#Firebrick

 

#FloralWhite

 

#ForestGreen

 

#Fuchsia

 

#Gainsboro

 

#GhostWhite

 

#Gold

 

#Goldenrod

 

#Gray

 

#Green

 

#GreenYellow

 

#Honeydew

 

#HotPink

 

#IndianRed

 

#Indigo

 

#Ivory

 

#Khaki

 

#Lavender

 

#LavenderBlush

 

#LawnGreen

 

#LemonChiffon

 

#LightBlue

 

#LightCoral

 

#LightCyan

 

#LightGoldenrodYellow

 

#LightGray

 

#LightGreen

 

#LightPink

 

#LightSalmon

 

#LightSeaGreen

 

#LightSkyBlue

 

#LightSlateGray

 

#LightSteelBlue

 

#LightYellow

 

#Lime

 

#LimeGreen

 

#Linen

 

#Magenta

 

#Maroon

 

#MediumAquamarine

 

#MediumBlue

 

#MediumOrchid

 

#MediumPurple

 

#MediumSeaGreen

 

#MediumSlateBlue

 

#MediumSpringGreen

 

#MediumTurquoise

 

#MediumVioletRed

 

#MidnightBlue

 

#MintCream

 

#MistyRose

 

#Moccasin

 

#NavajoWhite

 

#Navy

 

#OldLace

 

#Olive

 

#OliveDrab

 

#Orange

 

#OrangeRed

 

#Orchid

 

#PaleGoldenrod

 

#PaleGreen

 

#PaleTurquoise

 

#PaleVioletRed

 

#PapayaWhip

 

#PeachPuff

 

#Peru

 

#Pink

 

#Plum

 

#PowderBlue

 

#Purple

 

#Red

 

#RosyBrown

 

#RoyalBlue

 

#SaddleBrown

 

#Salmon

 

#SandyBrown

 

#SeaGreen

 

#Seashell

 

#Sienna

 

#Silver

 

#SkyBlue

 

#SlateBlue

 

#SlateGray

 

#Snow

 

#SpringGreen

 

#SteelBlue

 

#Tan

 

#Teal

 

#Thistle

 

#Tomato

 

#Turquoise

 

#Violet

 

#Wheat

 

#White

 

#WhiteSmoke

 

#Yellow

 

#YellowGreen

 

HSL Color Specifications

Wherever a color name/string can be specified, an HSL value can be supplied:

"HSL: hhh, sss, lll"

Where:

hhh

Color hue in the range of 0 to 360

sss

Color saturation level as a percentage in the range of 0 to 100

lll

Color lightness as a percentage in the range of 0 to 100

For a description of how HSL works, visit http://en.wikipedia.org/wiki/HSL_and_HSV.

Color Blending

If desired, wherever a color specification is needed, you can specify two colors separated by a + (plus sign), which will cause the system to blend the colors together.

Example:

The color specification of

"LIGHT RED" + "LIGHT YELLOW"

will result in an Orange color due to the blending of Yellow and Red.

Dynamic Color Lightening

To create shades of a specified color, you can append *nnn at the end of any color specification to cause the system to lighten/darken the color. The value of nnn defines the percentage by which the color will be lightened or darkened.

A value of *100 leaves the color alone, *120 will brighten the color by 20%, whereas *80 will darken it 20%.

Example:

Running the following program will adjust the lightness of the color BLUE between 50 and 150 percent:

for i=50 to 150 step 10
     print 'fill'(1,"BLUE*"+str(i)),'rectangle'(i*5,@y(15),i*5+50,@y(17)),
next

This yields the following result:

(HSL, Color Blending and Dynamic Color Lightening are available as of PxPlus 2014.)