Convert from CMYK to ▷ RGBA - Convert Colors at qConv

Recently converted colors

Convert from CMYK to RGBA

Short explanation

Three color values for red, green, and blue and transparency are determined from the four CMYK values for cyan, magenta, yellow, and black, and converted to the following notation: rgba (red, green, blue, 1).

When we convert the color red, it consists of 0% cyan, 100% magenta, 100% yellow, and 0% black. The CMYK notation is then as follows: cmyk (0%, 100%, 100%, 0%).

These color values are converted to an RGB value. This results in the color value in RGB notation with rgb (255, 0, 0, 1). There is always a loss of color accuracy to be expected when converting from CMYK to another color format. Since CMYK calculates without transparency value, it is not possible to calculate an RGBA color with transparency from it.

Calculation example

We will use the example of the color Dark Turquoise to describe a conversion from cmyk to rgba.

The starting value is the color in CMYK format:

CMYK = cmyk (82%, 1%, 0%, 18%)

These values are divided among the respective colors cyan, magenta, yellow, and black:

cyan = 82

Magenta = 1

yellow = 0

black = 18

The color values must now be converted from the CMYK color system to the decimal system of RGB. Since the colors do not match directly, the conversion is not so easy. The color values are determined with certain formulas.

Red = 255 * ((1 - Cyan / 100) * (1 - Black / 100))
Green = 255 * ((1 - Magenta / 100) * (1 - Black / 100))
Blue = 255 * ((1 - Yellow / 100) * (1 - Black / 100))

In our example, this means that at the beginning we have to calculate the value for red from cyan and black. Then we calculate the value for green from magenta and black. After that, we calculate the value for blue from yellow and black. This results in the following calculations:

red = 255 * ((1 - 82 / 100) * (1 - 18 / 100))
red = 38

green = 255 * ((1 - 1 / 100) * (1 - 18 / 100))
green = 207

blue = 255 * ((1 - 0 / 100) * (1 - 18 / 100))
blue = 209

To get the result of our calculation, we now need to convert the calculated decimal values into the RGB notation rgb (red, green, blue, transparency), where the value of transparency is always 1:

RGBA = rgba (38, 207, 209, 1)

CMYK color profile

Short description

CMYK is primarily used for four-color printing. It constructs color from the combination of cyan, magenta, yellow, and the black component.

It uses the value from 0 to 100 respectively, indicating the intensity of each color. In the CMYK color model, there is a special feature. The more color used, the darker the overall color. CMYK is always specified with four color values, each of which can range from 0% to 100%.

There are over 4 trillion CMYK colors, but not all of them can be represented.

Use

The CMYK color system is used for printing and for image or photo editing. It is available for selection in almost all image editing programs and should be selected as the default color system when working with printers. This will give you the most accurate print result possible.

More about CMYK

RGBA color space

Short description

RGBA stands for the three colors red, green and blue and a number for the transparency of the color. The three color values can be specified from 0 to 255.

The value for the transparency is given by a decimal value from 0 to 1.

There are therefore 16,777,216 possible RGB colors, but they can be represented in countless transparencies as RGBA colors.

Use

The RGB color system is one of the most common systems for web applications and image or photo editing. It is used in the creation and design of web pages and can be found in most image editing programs.

More about RGBA

CMYK to RGBA convert

Recently converted colors