How to get R-G-B value from color name programmatically

Question

By knowing the color name how can we programmatically find its red-green-blue values in Java?

What color names do you want to recognize? HTML ones? In any case the simplest thing is to build a `Map` to lookup them. — helios, Aug 28 '12 at 11:34
same as this. http://stackoverflow.com/questions/4126029/java-color-code-convert-to-color-name — Sajith, Aug 28 '12 at 11:38

score 5 · Answer 1 · edited Feb 05 '18 at 10:24

5

The javax.swing.text.html.StyleSheet can be used for this:

import javax.swing.text.html.StyleSheet;

StyleSheet s = new StyleSheet();
String rgb = "black";
Color c1 = s.stringToColor(rgb);
r1 = c1.getRed();
g1 = c1.getGreen();
b1 = c1.getBlue();

System.out.println(r1 + ", " + g1 + ", " + b1);

edited Feb 05 '18 at 10:24

Lii

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answered Feb 13 '14 at 13:33

A.Shivaranjani

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Stephen C · Accepted Answer · 2012-08-28T12:14:00.080

Since you are using SWT, you may be able to use the ColorRegistry API. There are a couple of ways to get hold of prepopulated registries (JFaceResources.getColorRegistry() and ITheme.getColorRegistry()) though it is not obvious from the javadocs what colors they are prepopulated from, and where the color definitions come from.

Alternatively use create a map and populate it with names based on the SWT.COLOR_XXX constants ans color values obtained by using Display.getSystemColor(...)

Lii · Answer 3 · 2018-02-15T08:07:30.517

0

If you are writing code for the Eclipse platform then the ColorUtil#getColorValue method is an alternative.

It have access to all the colours for the constants that are defined in the SWT class, also the system colours.

The method is in the org.eclipse.ui.workbench plug-in.

edited Feb 15 '18 at 08:07

answered Feb 14 '18 at 15:02

Lii

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score -1 · Answer 4 · edited Apr 15 '17 at 11:59

-1

Color c= Color.red;
int rgb=c.getRed()*65536+c.getGreen()*256+c.getBlue();

Is this what you wanted to know?

edited Apr 15 '17 at 11:59

Baum mit Augen

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answered Apr 15 '17 at 05:47

NEKIBUR RAHMAN

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Mohammod Hossain · Answer 5 · 2012-08-28T11:55:04.237

-2

You can get rgb value from hex value.

following code :

Color aColor = new Color(0xFF0096); // Use the hex number syntax
        aColor.getRGB()

edited Aug 28 '12 at 11:55

answered Aug 28 '12 at 11:40

Mohammod Hossain

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That's not at all what the OP asked for. He wants to have RGB value if the input is, for example, `"blue"`. – Baz Aug 28 '12 at 11:45
yes u r right I want to get rgb value from a color name.....and I think it could be helpful by mapping only as... stated above – Alok Aug 28 '12 at 11:54

How to get R-G-B value from color name programmatically

5 Answers5