Color-value calculation. What's my most efficient way to come up with the hex values of 30 discrete colors that fade as evenly as possible from 220088 to DDCCFF? [more inside]
posted by kalapierson on Jul 24, 2011 - 9 answers

RGB color reference guide. I have just purchased an Epson R1900. I need to match pantone colors & fabric swatches to create artwork. So ideally I would like to print a color reference book of all it's possible RGB colors that I can refer to as a guide to match a color. Is there an "easy" way to do this from either Photoshop or preferably Illustrator? I am a mac user. I did find a multiRIP software but it seems to be only PC friendly.
posted by sequin on Dec 24, 2009 - 4 answers

Electronics/LED Folks: I bought a few cheap, poorly-assembled LED color-changing orb-things and I'm pretty sure they're the coolest objects I have ever owned. I cracked 'em open, and damned if I know what is going on in there, but it looks simple/cheap as all hell. Help me figure it out, I'll post a build-log/parts list somewhere, and in short-order we can all be ass-deep in home-made, disarmingly sublime mood-lighting. [more inside]
posted by jjjjjjjijjjjjjj on Nov 18, 2008 - 28 answers

I'm working with a client who has an existing web logo designed the majority of which is three primary colors in RGB. So left to right it's a vertical stripe of Blue (#0000FF) next to a vertical stripe of Red (#FF0000), next to a vertical stripe of Yellow (#FFFF00). This logo now needs to go on business cards (plastic ones) and so needs to convert from RGB to CMYK in order to be printed. Problem being that the CMYK gamut just doesn't do those eye popping RGB turned up to 11 primaries so conversion leaves a lackluster product and the client on seeing the drafts in PDF with the colors converted is not impressed. Ideas for saving this one? CMYK versions of those colors that contrast in a similar way to their RGB equivalents? Recommendations for printers (online or in NYC) who can do 3.5" x 2", rounded corner, double-sided, plastic business cards with special inks? HELP!
posted by merocet on Nov 14, 2008 - 10 answers

The primary colours are red,yellow & blue. All other colours can be made from them. Why then do computer screens etc use red, GREEN & blue?
posted by TiredStarling on Feb 16, 2005 - 23 answers