Dr. Tarek Bahaa El Deen
Assistant Professor in Graphic Design

Color description through Transparency and Opacity

i work on research about color system and how we cane describe a color

the most problem is Transparency and Opacity of color

what is your opinion about that ?

  • Photoshop

    Editing and compositing for photos, web and mobile app designs, 3D artwork, videos, and more.

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Comments (9)

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Aziz Soubai

Posted on 6/19/18 3:52:09 AM Permalink

Thanks for sharing your work

Megan Dill

Posted on 1/21/15 7:18:26 AM Permalink

If you want to try a different way of explaining it, to my college students I would explain transparency and opacity by using watercolors and then show how by diluting the paint it becomes more transparent. Then show them how this can mean the same thing, but just digitally.

Lukas Engqvist

Posted on 3/13/14 6:15:19 AM Permalink

I wish I could just open a virtual classroom, so that we could talk about these things. Tarek I don't quite understand your question, is it in photoshop you are trying to understand these things? One great resource is the site and also see

I'd be happy to to talk with you, but don't have any readily available materials in english. If only there was a way to book a live Connect room in the education exchange.

Nancy Parker

Posted on 7/20/13 6:55:18 PM Permalink

I am very interested in learning more about "blend modes" and "color space" and the impact on the visual experience. Where can I find more information on using color?

Lukas Engqvist

Posted on 3/13/14 6:20:36 AM Permalink

Madra Ullrich

Posted on 1/21/15 11:39:38 AM Permalink

Wow, these are excellent sites. Thank you so much for sharing the links!

Lukas Engqvist

Posted on 5/16/13 11:58:47 PM Permalink

Opacity is the opposite of transparency. An opaque object is not transparent but covers completely. This answer needs to be modified since transparency blend modes synthesize a new colour depending on the colours and how they are blended. One important thing to note is that the colour space affects how colours are blended. It is easier and more predictable to. Blend RGB images since any given colour only has one set of values (not so in CMYK).

I would be happy to talk more on this, please explain more closely what you want to know.

Ahmed Ali Moselhi

Posted on 2/21/14 9:36:43 PM Permalink

i want to understand the software calculation if we blend 2 colors; top color will be 50% opacity?

Lukas Engqvist

Posted on 3/13/14 6:16:45 AM Permalink

Depends on many factors, the colour space (RGB or CMYK) have a great impact as do blend modes.