Working with RGB Colors & Transparency

NOTE to lurkers & snaggers - You are welcome to do the project, but DO NOT snag the images from this tute and post them in any other group.

Image Magic

Expanding on Sally's DEX Backs Tutorial

I recommend you put this on an FKey if you have one available.   Gest Color Convertor

To use the color convertor, here are a couple of things to remember.

Do NOT use the # sign, just the 6 digits.

Do NOT use caps, it must be all lower case, or it won't work.

This is a hex number - #1b5224. It's a dark green that I used for the holly image.

To get the feel for it - CCP this part - 1b5224 - and go to the convertor. Paste in the HEX box, then click enter. To the right you will see:

R 27 G 82 B 36 -- the numbers 27, 82 and 36 are the numbers you need to write down. When we enter them in the color fill box it will look like this: rbga(27,82,36,.50) The .50 is for 50% transparency.

RGB means red, green, blue.

R =Red     0=no red color -- 255=maximum amount of red color.

G=Green   0=no green color -- 255=maximum amount of green color.

B=Blue     0=no blue color -- 255=maximum amount of blue color.

Ok - now that you know how the CC works, let's do an exercise.

The colors in rgb form MUST be entered exactly as I have them - meaning use the commas, use the parenthesis, use the decimal before the last number and use the rgba before the numbers. r=red,  g=green,  b=blue, a=alpha. Alpha is what makes the transparency work. The lower the number, the more transparent.

Make a 400x400 white xc. Go to draw.

Choose rectangle - Parameters -+20+20 +150+200

In the fill color box put this:
rgba(255,0,0,.80)

No Stroke - Click DRAW

Ok - so you're sayin' "big deal!" - but wait!

Draw again.

Change parameters to +60+60 +210+260

Change fill color to:

rgba(0,0,255,.50)

Seeeee?!!

Draw again.

Change parameters to +120+120 +270+320

Change fill color to:

rgba(0,255,0,.40)

Draw again.

Change parameters to +180+180 +330+380

Change fill color to:

rgba(255,0,0,.20)

How to do the Holly

CCP the holly

Make a white xc 340x340

Composite holly - center, over.

Anno name.

Go to draw - choose ellipse.

+170+170 +135+120 +0+360

Fill color = rgba(27,82,36,.10) -- converted from #1b5224 (no stroke color)

Draw again - change just the parameters to:

+185+185 +135+120 +0+360

Draw again.

Change to rectangle.

+10+10 +330+330

Stroke color=#1B5224 (no fill)

Feel free to use your own images. Go to a color grabber and get the hex #, then to the color convertor and get the rgb numbers.

Change the Mood

More Artistic Uses

Have FUN!