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Paraskevi Tsaramirsi

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Posted
Good evening to all!! I would love your knowledge! I've found a picture on the internet and I want to paint it. Based on this https://www.ginifab.com/feeds/pms/color_picker_from_image.php it comes out next to RGB (...). There are 3 values in this bracket. What exactly are these values? [img=16x16]data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAQAAAAngNWGAAAA/0lEQVR4AYXNMSiEcRyA4cfmGHQbCZIipkuxnJgMStlMNmeyD2dwmc8+sZgxYJd9ErIZFHUyYYD7fkr6l4/rnvmtl7+KitrqV/fq2Y5eLY3Z9S48eRLe7BmVZ9qhTLhQ0algzZWQOVKSsCF8OjAnwbxDTWFDUhPK/jMr1H6HE/IqRky2DyvCefuwItwZzodVoYRiLqMkVCXrwpJ9twZ+sgfDYEFYl8wIWxZ9uFf7zkallxlJh4YrLGsKjZRx7VGHhLqwgFUN45DGdb8MeXGpgB4ABZdeDcpZEY51A+hyLKz4S1W4MQWm3AibWtgWmk6dyISa1pSdyWTOlLXVp0+eL9D/ZPfBTNanAAAAAElFTkSuQmCC[/img]
With Sarah, Phil, Ellen, Rose the dentist, and the granddaughter whose name I forget.

Robert Jones, NAPA

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Posted
With some difficulty, I have found the site you mentioned and note that every bracket there has rgb against it - I don't understand what you are asking, specifically, and the italicized words in the second part of your message aren't taking me anywhere.  Except to a site called Hovatek, and I have no idea at all what that's all about, but it doesn't seem to have anything to do with painting............

Edited
by Robert Jones, NAPA

Alan Bickley

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Posted
The only term RGB that I know of is the one used in printing, digital mainly standing for Red, Green, Blue. Lithography printing uses the 4-colours CMYK which equate to cyan, magenta, yellow and K for black. Other than that, I also have no clue to what this post is about! 
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Tony Auffret

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Posted
I can't be sure, it's a while since I did HTML, but I suspect this is mainly a reference to to where the image file is located on the server - though it does seem extraordinarily long and complicated but the format [img=16 x 16] load of stuff [/img] would seem to be information about where to find and how to display the image on the website.  I would guess it contains no useful information on the image itself.

Steve Andrews

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Posted
My understanding is that for computer displays and printers colours can be defined by RGB.  For instance Red 0, Green 0 and Blue 0 indicates black, whereas if they were 255, 255 and 255 (the max figures) the colour would be white.  As the ratios change so does the colour - then hue, saturation and light change the colour further.  Quite how this works I don't know as I would have expected the basic colours to be red, blue and yellow.  Strangely, max red and green with nil blue produces yellow!  Perhaps someone with a bit of tech knowledge can enlighten us further on this?

Alan Morris

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Posted
I’m sure there are those out there who can explain it better, but I’ll have a go.  What you are talking about I think is the difference between subtractive and additive colour mixing systems.   Firstly we have to assume that the the light from the sun is white.  Put it through a prism and you get a multitude of colours, eg  the rainbow(the spectrum) In a computer screen colours are made by combining different coloured light to make the colour required.  Adding coloured light together... additive mixing. Therefore adding all the colours together equals white. When we paint we use a substance that reflects that white light in different ways.  Blue, for instance is blue because it only reflects that part of the spectrum that we recognise as blue.  It absorbs all other parts of that white light, except blue.  Subtracting all other colour from white to leave blue...subtractive mixing.  Following this logic ... add all your different colours together and no light will be reflected.... black. Sorry it’s my best effort.