Convert the RGB values to the range 0-1, this can be done by dividing the value by 255 for 8-bit color depth (r,g,b – are given values): R = r / 255 = 0.09 G = g / 255 = 0.38 B = b / 255 = 0.46 Find the minimum and maximum values of … Read more
The RGB int color contains the Red, Green, Blue components of the color in its bits. You have to look at its binary or hexadecimal representation and not look at it as a whole integer number (not look at its decimal representation). An int has 32 bits, 3×8 = 24 is used to store the … Read more
Hex values are easier to copy and paste from your favourite image editor. RGB values are easier to manipulate with Javascript. (My favourite Hex colour value is #EDEDED and a site we made for a client involved in motorsport had a background colour of #F1F1F1 🙂 Ed.
If I get it right then the answer is YES but just for clarification this is how I see it: You got 4 bands intensities and you need RGB color value from it. Last number is not related to color in any way so ignore it. What you need to know if the intensity is … Read more
It’s not so simple- an rgb is illegal with a fourth parameter. You also need to allow for percentage decimals as well as integer values for the rgb numbers. And spaces are allowed almost anywhere. function getRgbish(c){ var i= 0, itm, M= c.replace(/ +/g, ”).match(/(rgba?)|(\d+(\.\d+)?%?)|(\.\d+)/g); if(M && M.length> 3){ while(i<3){ itm= M[++i]; if(itm.indexOf(‘%’)!= -1){ itm= … Read more
You’re close but colorWithRed:green:blue:alpha: expects values ranging from 0.0 to 1.0, so you need to shift the bits right and divide by 255.0f: CGFloat red = ((baseColor1 & 0xFF0000) >> 16) / 255.0f; CGFloat green = ((baseColor1 & 0x00FF00) >> 8) / 255.0f; CGFloat blue = (baseColor1 & 0x0000FF) / 255.0f; EDIT – Also NSScanner’s … Read more
This answer is not for Illustrator, but for ‘some other tool’, namely Ghostscript (download gs871w32.exe or gs871w64.exe). Ghostscript allows you to ‘re-distill’ PDFs (without an intermediate conversion to PostScript, the dreaded ‘refrying’ detour). Try this command: gswin32c.exe ^ -o c:/path/to/output-cmyk.pdf ^ -sDEVICE=pdfwrite ^ -dUseCIEColor ^ -sProcessColorModel=DeviceCMYK ^ -sColorConversionStrategy=CMYK ^ -sColorConversionStrategyForImages=CMYK ^ input-rgb.pdf And if you … Read more
def rgb(minimum, maximum, value): minimum, maximum = float(minimum), float(maximum) ratio = 2 * (value-minimum) / (maximum – minimum) b = int(max(0, 255*(1 – ratio))) r = int(max(0, 255*(ratio – 1))) g = 255 – b – r return r, g, b
Bitmap#getPixel(x, y) returns an int with the colour values and alpha value embedded into it. int colour = bitmap.getPixel(x, y); int red = Color.red(colour); int green = Color.green(colour); int blue = Color.blue(colour); int alpha = Color.alpha(colour);
I believe that this does what you are looking for: h = input(‘Enter hex: ‘).lstrip(‘#’) print(‘RGB =’, tuple(int(h[i:i+2], 16) for i in (0, 2, 4))) (The above was written for Python 3) Sample run: Enter hex: #B4FBB8 RGB = (180, 251, 184) Writing to a file To write to a file with handle fhandle while … Read more