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color_shotgun [2021/03/10 06:42] – [1.2.0] o2admin | color_shotgun [2022/04/21 20:43] – o2wiki | ||
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**CMYK Conversions** \\ | **CMYK Conversions** \\ | ||
- | CMYK colors may not be converted to the same color percentage since the starting color is converted from CMYK to a L*a*b color then back to CMYK. This is because the black color value is not preserved, and since there are multiple ways to create | + | CMYK colors may not be converted to the same color percentage since the starting color is converted from CMYK to a L*a*b color then back to CMYK. This is because the black color value is not preserved, and since there are multiple ways to create |
+ | |||
+ | Secondly, The assumption is that the starting CMYK color is not correct and that the goal is to find a CMYK mix that produces the correct color on a digital printer that matches a sample or colour book. To that end, the actual CMYK mix used is not as important as the colour produced. | ||
//It's important to remember that when printing to a digital printer, the color in your file is not the color formula used to print to the media. If your artwork is CMYK 0,100,50,0% that formula simply tells the printer what color you want. That formula will past through multiple color profiles and correction curves, so the actual mixtures of ink used on the media will be different. It should not be a concern if your starting colour changes from CMYK 0,95,70,25% to something more random CMYK 18, | //It's important to remember that when printing to a digital printer, the color in your file is not the color formula used to print to the media. If your artwork is CMYK 0,100,50,0% that formula simply tells the printer what color you want. That formula will past through multiple color profiles and correction curves, so the actual mixtures of ink used on the media will be different. It should not be a concern if your starting colour changes from CMYK 0,95,70,25% to something more random CMYK 18, | ||
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**LCH Grid** \\ | **LCH Grid** \\ | ||
This is used for most colors, where each block is a different hue (color) and in each block the colors are lighter on top and darker on the bottom, | This is used for most colors, where each block is a different hue (color) and in each block the colors are lighter on top and darker on the bottom, | ||
- | * If the swatchis | + | * If the swatch is the wrong ' |
* If the swatch is too light compared to the sample move down. | * If the swatch is too light compared to the sample move down. | ||
* If the swatch is not saturated enough (too grey) move right | * If the swatch is not saturated enough (too grey) move right | ||
**Lab (Grey) Grid** \\ | **Lab (Grey) Grid** \\ | ||
- | For Greys and low saturated colors, each block is a different lightness, and in each block the color will vary, left is more green, right is more red, up is more yellow, down is more blue. This grid makes is easier to find neutral colors | + | For Greys and low saturated colors, each block is a different lightness, and in each block the color will vary, left is more green, right is more red, up is more yellow, down is bluer. This grid makes is easier to find neutral colors |
**Delta-E** \\ | **Delta-E** \\ |