Since colours in an image can appear differently on a computer monitor than in print, it is important for graphic designers to select the correct colour mode. The two most popular colour modes found in most graphic imaging programs include CMYK and RGB. According to "Quickstudy: Color Space," the CMYK colour mode is represented by cyan, magenta, yellow and black. The RGB mode includes the primary colours red, green and blue. RGB numeric values range from 0 to 255, while CMYK values are represented by percentage from 0 to 100. These values are necessary for colour conversion.
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Things you need
- Graphic design software
- Online colour converter
Open the graphic design program and create a new document. Click "File," then "New" from the top drop-down menu and choose the appropriate document settings. A blank workspace should appear on the centre of the screen.
Navigate to the colour picker for changing the foreground or background colour of the document. Click the colour swatch for either option. A pop-up menu displaying the RGB and CMYK colour values should appear. Since these values are directly observable by clicking the colour swatch, it is not necessary to create a colour filled shape or object on the workspace to retrieve these values.
From the "Color Picker" menu box, make a written note of the percentage values for CMY and K. For example, C = 1%, M = 99%, Y = 100%, K = 0%. These percentages must be entered into the online colour converter to obtain the RGB values of the selected colour.
Find an online CMYK to RGB colour converter. Enter the CMYK percentage values for the selected colour. Submit the information to display the RGB values.
Tips and warnings
- Instead of manually converting the values for individual colours, use the options in the graphic design software to record the values or to change the colour mode of an entire image.
- The converted values between CMYK and RGB will not be exact. The RGB value might yield a similar colour in the same shade as the original, with little accuracy, but not the exact colour.
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