CMYK to RGB converter
Set cyan, magenta, yellow and key, and read the matching RGB value instantly. HueKit also shows hex, HSL and HSV so you have every format at once.
Converting CMYK to RGB
CMYK describes color the way a printer sees it: four inks, each set as a percentage. Cyan, magenta and yellow subtract light from white paper, and the key plate adds black. RGB works the opposite way, mixing red, green and blue light on a screen. To move from one to the other, HueKit first blends the key with each colored ink, then scales the result up to the 0 to 255 range that RGB uses.
The formula is direct. Red equals 255 times one minus cyan times one minus key, and green and blue use magenta and yellow in the same positions. Because every step is a simple multiplication, the answer updates the instant you drag a slider, with no rounding surprises beyond the final whole number for each channel.
When you need this jump
Designers usually work in CMYK for print and RGB or hex for the web, so this conversion comes up whenever a brand color has to live in both places. Keep in mind that the two models cover different ranges of color, so a vivid print ink can look slightly muted on screen. When you need the reverse direction, the full color converter handles it, and the hex to RGB converter covers the most common web jump.
Frequently asked questions
How do I convert CMYK to RGB?
Each CMYK channel is a percentage from 0 to 100. RGB is found by combining the key (black) with each ink, so red is 255 times one minus cyan times one minus key, and green and blue follow the same shape with magenta and yellow. HueKit runs the math live as you move the sliders.
Why does CMYK to RGB not always match perfectly?
CMYK is a subtractive model built for ink on paper, while RGB is additive light on a screen. The two gamuts do not overlap exactly, so a printed color and its RGB preview can differ. The converter gives the closest standard RGB value.
What does the K in CMYK stand for?
K is the key plate, which is black. Printers add a dedicated black ink instead of layering cyan, magenta and yellow, because that gives cleaner text and deeper shadows while saving colored ink.